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RHABDOVIRUS, SEM

Composite coloured scanning electron micrograph (SEM) of rhabdovirus particles on the surface of a dying astroglial cell (astrocyte). There are holes in the cell membrane due to the cell death process. Rabies is a viral disease that causes acute encephalitis (inflammation of the brain) in warm-blooded animals, including humans. The disease is zoonotic, that is, it can be transmitted from one animal species to another, such as from dogs to humans. The rabies virus can be transmitted by a bite from an infected animal. The virus infection travels to the brain by following the peripheral nerves. Magnification: x80, 000 when shortest axis printed at 25 millimetres.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

RHABDOVIRUS, SEM

Composite coloured scanning electron micrograph (SEM) of rhabdovirus particles on the surface of a dying astroglial cell (astrocyte). There are holes in the cell membrane due to the cell death process. Rabies is a viral disease that causes acute encephalitis (inflammation of the brain) in warm-blooded animals, including humans. The disease is zoonotic, that is, it can be transmitted from one animal species to another, such as from dogs to humans. The rabies virus can be transmitted by a bite from an infected animal. The virus infection travels to the brain by following the peripheral nerves. Magnification: x80, 000 when shortest axis printed at 25 millimetres.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

RHABDOVIRUS, SEM

Composite coloured scanning electron micrograph (SEM) of rhabdovirus particles on the surface of a dying astroglial cell (astrocyte). There are holes in the cell membrane due to the cell death process. Rabies is a viral disease that causes acute encephalitis (inflammation of the brain) in warm-blooded animals, including humans. The disease is zoonotic, that is, it can be transmitted from one animal species to another, such as from dogs to humans. The rabies virus can be transmitted by a bite from an infected animal. The virus infection travels to the brain by following the peripheral nerves. Magnification: x80, 000 when shortest axis printed at 25 millimetres.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

RHABDOVIRUS, SEM

Composite coloured scanning electron micrograph (SEM) of rhabdovirus particles on the surface of a dying astroglial cell (astrocyte). There are holes in the cell membrane due to the cell death process. Rabies is a viral disease that causes acute encephalitis (inflammation of the brain) in warm-blooded animals, including humans. The disease is zoonotic, that is, it can be transmitted from one animal species to another, such as from dogs to humans. The rabies virus can be transmitted by a bite from an infected animal. The virus infection travels to the brain by following the peripheral nerves. Magnification: x80, 000 when shortest axis printed at 25 millimetres.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

RHABDOVIRUS, SEM

Composite coloured scanning electron micrograph (SEM) of rhabdovirus particles on the surface of a dying astroglial cell (astrocyte). There are holes in the cell membrane due to the cell death process. Rabies is a viral disease that causes acute encephalitis (inflammation of the brain) in warm-blooded animals, including humans. The disease is zoonotic, that is, it can be transmitted from one animal species to another, such as from dogs to humans. The rabies virus can be transmitted by a bite from an infected animal. The virus infection travels to the brain by following the peripheral nerves. Magnification: x80, 000 when shortest axis printed at 25 millimetres.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

RHABDOVIRUS, SEM

Composite coloured scanning electron micrograph (SEM) of rhabdovirus particles on the surface of a dying astroglial cell (astrocyte). There are holes in the cell membrane due to the cell death process. Rabies is a viral disease that causes acute encephalitis (inflammation of the brain) in warm-blooded animals, including humans. The disease is zoonotic, that is, it can be transmitted from one animal species to another, such as from dogs to humans. The rabies virus can be transmitted by a bite from an infected animal. The virus infection travels to the brain by following the peripheral nerves. Magnification: x80, 000 when shortest axis printed at 25 millimetres.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

RHABDOVIRUS, SEM

Composite coloured scanning electron micrograph (SEM) of rhabdovirus particles on the surface of a dying astroglial cell (astrocyte). There are holes in the cell membrane due to the cell death process. Rabies is a viral disease that causes acute encephalitis (inflammation of the brain) in warm-blooded animals, including humans. The disease is zoonotic, that is, it can be transmitted from one animal species to another, such as from dogs to humans. The rabies virus can be transmitted by a bite from an infected animal. The virus infection travels to the brain by following the peripheral nerves. Magnification: x80, 000 when shortest axis printed at 25 millimetres.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

FOSSILISED SPONGE SPICULE, SEM

Coloured scanning electron micrograph (SEM) of a fossilised marine sponge spicule from Oamaru, New Zealand. 3-D star shape. Sponge spicules are found in most sponges. They act as the structural support of sponges and deter predators. Spicules can be found in a wide range of symmetry types. They can be made of calcium carbonate, silica dioxide or spongin. Spicules are formed by sclerocytes, which are derived from archaeocytes. There are 4 main types of spicules: monaxons, triaxons, tetraxons and dendroclones. Magnification: x2, 200 when shortest axis printed at 25 millimetres.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

H1N1 INFLUENZA VIRUS PARTICLES, ILLUSTRATION

H1N1 flu virus particles. Illustration of two H1N1 influenza A (flu) virus particles (virions). In each particle's lipid envelope are two types of protein spike, haemagglutinin (H) and neuraminidase (N), which determine the strain of virus. These are used for recognising and binding to the host cell. Across bottom is a lipid bilayer representing the cell membrane.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/ELLA MARU STUDIO / SCIENCE PHOTO LIBRARY)

BROKEN MICROCHIP ON CIRCUIT BOARD WITH RED LETTERING 'SECURITY WARNING', WARNING SIGN AND STYLIZED DATA STREAM

Broken microchip on circuit board with red lettering 'Security Warning', warning sign and stylized data stream (KEYSTONE/mauritius images/PETER GRAF)

SYMBOLICAL IMAGE VIRUS ALERT, CYBERCRIME, PRIVACY

Symbolical image virus alert, cybercrime, privacy (KEYSTONE/mauritius images/MICHAEL WEBER)

SYMBOLICAL IMAGE VIRUS ALERT, CYBERCRIME, PRIVACY

Symbolical image virus alert, cybercrime, privacy (KEYSTONE/mauritius images/MICHAEL WEBER)

WESTERN GORILLA (GORILLA GORILLA) SILVERBACK SKULL WITH BUTTERFLY (BELENOIS THESZI). GORILLA DIEDD FROM THE EBOLA VIRUS, WHICH KILLED 128 PEOPLE IN THE REGION IN 2003 AND IN 2005 KILLED 95% OF THE GORILLA POPULATION IN THE ODZALA-KOKOUA NATIONAL PARK. ODZ

Western Gorilla (Gorilla gorilla) silverback skull with butterfly (Belenois theszi). Gorilla diedd from the Ebola Virus, which killed 128 people in the region in 2003 and in 2005 killed 95% of the Gorilla population in the Odzala-Kokoua National Park. Odzala Kokoua NP, Republic of Congo, June 2004.. (KEYSTONE/NATURE PICTURE LIBRARY/Jabruson)

HUMAN SWINE FLU VIRUS H1N1, TEM

Swine influenza (H1N1) virus particles (virions) determined to be the cause of the April 2009 outbreak (originated in Mexico City, Mexico), coloured transmission electron micrograph (TEM). H1N1 swine flu virus (Family Orthomyxoviridae) is a strain of influenza type A that contains genetic material from bird and human influenza viruses. It is thus able to spread from human to human and cause an influenza pandemic. Symptoms are similar to those of human flu and include fever, cough, sore throat, body aches, headache, chills and fatigue. It can lead to death. Swine flu in pigs is a respiratory disease of pigs caused by a type A influenza virus. Magnification: x29, 800 when shortest axis printed at 25 millimetres. Original image courtesy of the CDC.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

HUMAN SWINE FLU VIRUS H1N1, TEM

Swine influenza (H1N1) virus particles (virions) determined to be the cause of the April 2009 outbreak (originated in Mexico City, Mexico), coloured transmission electron micrograph (TEM). H1N1 swine flu virus (Family Orthomyxoviridae) is a strain of influenza type A that contains genetic material from bird and human influenza viruses. It is thus able to spread from human to human and cause an influenza pandemic. Symptoms are similar to those of human flu and include fever, cough, sore throat, body aches, headache, chills and fatigue. It can lead to death. Swine flu in pigs is a respiratory disease of pigs caused by a type A influenza virus. Magnification: x29, 800 when shortest axis printed at 25 millimetres. Original image courtesy of the CDC.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

HUMAN SWINE FLU VIRUS H1N1, TEM

Swine influenza (H1N1) virus particles (virions) determined to be the cause of the April 2009 outbreak (originated in Mexico City, Mexico), coloured transmission electron micrograph (TEM). H1N1 swine flu virus (Family Orthomyxoviridae) is a strain of influenza type A that contains genetic material from bird and human influenza viruses. It is thus able to spread from human to human and cause an influenza pandemic. Symptoms are similar to those of human flu and include fever, cough, sore throat, body aches, headache, chills and fatigue. It can lead to death. Swine flu in pigs is a respiratory disease of pigs caused by a type A influenza virus. Magnification: x29, 800 when shortest axis printed at 25 millimetres. Original image courtesy of the CDC.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

HUMAN SWINE FLU VIRUS H1N1, TEM

Swine influenza (H1N1) virus particles (virions) determined to be the cause of the April 2009 outbreak (originated in Mexico City, Mexico), coloured transmission electron micrograph (TEM). H1N1 swine flu virus (Family Orthomyxoviridae) is a strain of influenza type A that contains genetic material from bird and human influenza viruses. It is thus able to spread from human to human and cause an influenza pandemic. Symptoms are similar to those of human flu and include fever, cough, sore throat, body aches, headache, chills and fatigue. It can lead to death. Swine flu in pigs is a respiratory disease of pigs caused by a type A influenza virus. Magnification: x29, 800 when shortest axis printed at 25 millimetres. Original image courtesy of the CDC.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

HUMAN SWINE FLU VIRUS H1N1, TEM

Swine influenza (H1N1) virus particles (virions) determined to be the cause of the April 2009 outbreak (originated in Mexico City, Mexico), coloured transmission electron micrograph (TEM). H1N1 swine flu virus (Family Orthomyxoviridae) is a strain of influenza type A that contains genetic material from bird and human influenza viruses. It is thus able to spread from human to human and cause an influenza pandemic. Symptoms are similar to those of human flu and include fever, cough, sore throat, body aches, headache, chills and fatigue. It can lead to death. Swine flu in pigs is a respiratory disease of pigs caused by a type A influenza virus. Magnification: x29, 800 when shortest axis printed at 25 millimetres. Original image courtesy of the CDC.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

CHICKENPOX VIRUS, ILLUSTRATION

Computer illustration of a varicella zoster virus particle, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3).(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/KATERYNA KON/SCIENCE PHOTO LIBRARY)

CHICKENPOX VIRUS, ILLUSTRATION

Computer illustration of varicella zoster virus particles, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3).(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/KATERYNA KON/SCIENCE PHOTO LIBRARY)

CHICKENPOX VIRUS, ILLUSTRATION

Computer illustration of a varicella zoster virus particle, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3).(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/KATERYNA KON/SCIENCE PHOTO LIBRARY)

CHICKENPOX VIRUS, ILLUSTRATION

Computer illustration of a varicella zoster virus particle, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3).(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/KATERYNA KON/SCIENCE PHOTO LIBRARY)

CHICKENPOX VIRUS STRUCTURE, ILLUSTRATION

Computer illustration of a varicella zoster virus particle, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3).(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/KATERYNA KON/SCIENCE PHOTO LIBRARY)

CHICKENPOX VIRUS, ILLUSTRATION

Computer illustration of a varicella zoster virus particle, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3).(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/KATERYNA KON/SCIENCE PHOTO LIBRARY)

CHICKENPOX VIRUS PARTICLES, ILLUSTRATION

Computer illustration of varicella zoster virus particles, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3).(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/KATERYNA KON/SCIENCE PHOTO LIBRARY)

CHICKENPOX VIRUS, ILLUSTRATION

Computer illustration of a varicella zoster virus particle, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3).(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/KATERYNA KON/SCIENCE PHOTO LIBRARY)

CHICKENPOX VIRUS PARTICLES, ILLUSTRATION

Computer illustration of varicella zoster virus particles, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3).(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/KATERYNA KON/SCIENCE PHOTO LIBRARY)

CHICKENPOX VIRUS, ILLUSTRATION

Computer illustration of varicella zoster virus particles, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3).(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/KATERYNA KON/SCIENCE PHOTO LIBRARY)

CHICKENPOX VIRUS PARTICLES, ILLUSTRATION

Computer illustration of varicella zoster virus particles, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3).(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/KATERYNA KON/SCIENCE PHOTO LIBRARY)

CHICKENPOX VIRUS PARTICLES, ILLUSTRATION

Computer illustration of varicella zoster virus particles, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3).(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/KATERYNA KON/SCIENCE PHOTO LIBRARY)

CHICKENPOX VIRUS, ILLUSTRATION

Computer illustration of a varicella zoster virus particle, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3).(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/KATERYNA KON/SCIENCE PHOTO LIBRARY)

ZIKA VIRUS, ILLUSTRATION

Illustration of the Zika virus (ZIKV). Zika (pink and turquoise) is a re-emerging arthropod-borne Flavivirus and it has become a major international public health problem following the large outbreaks during 2013-2016. (KEYSTONE/SCIENCE PHOTO LIBRARY/BIOLUTION GMBH)

INTENSIVE CARE UNIT CORONA EMERGENCY BRAKE, CGI

Intensivstation Corona Notbremse, CGI Intensive care unit Corona emergency brake, CGI (KEYSTONE/mauritius images/CGIMANUFAKTUR)

INTENSIVE CARE UNIT CORONA VIRUS, CGI

Intensivstation, Corona Virus, CGI Intensive care unit Corona Virus, CGI (KEYSTONE/mauritius images/CGIMANUFAKTUR)

WARNING NOTICE FOR EBOLA DURING THE 2008 PANDEMIC, NORTHERN REPUBLIC OF THE CONGO (CONGO-BRAZZAVILLE), 2008.

Warning notice for Ebola during the 2008 pandemic, northern Republic of the Congo (Congo-Brazzaville), 2008.. (KEYSTONE/NATURE PICTURE LIBRARY/Steve O. Taylor (GHF))

PEOPLE IN BIOHAZARD SUITS TAKING BLOOD SAMPLES FROM BAT TO FIND THE RESERVOIR HOST OF EBOLA VIRUS. EBOLA VIRUS DISEASE IN MBOMO KILLED 128 PEOPLE IN 2003 AND IN 2005 KILLED 95% OF ODZALA NATIONAL PARK'S WESTERN GORILLA POPULATION. MBOMO VILLAGE, NEAR ODZA

People in biohazard suits taking blood samples from bat to find the reservoir host of Ebola virus. Ebola Virus Disease in Mbomo killed 128 people in 2003 and in 2005 killed 95% of Odzala National Park's Western Gorilla population. Mbomo village, near Odzala-Kokoua National Park, Republic of Congo, June 2005.. (KEYSTONE/NATURE PICTURE LIBRARY/JABRUSON)

PEOPLE IN BIOHAZARD SUITS ANALYSING BLOOD SAMPLES TO FIND THE RESERVOIR HOST OF EBOLA VIRUS. EBOLA VIRUS DISEASE IN MBOMO KILLED 128 PEOPLE IN 2003 AND IN 2005 KILLED 95% OF ODZALA NATIONAL PARK'S WESTERN GORILLA POPULATION. MBOMO VILLAGE, NEAR ODZALA-KOK

People in biohazard suits analysing blood samples to find the reservoir host of Ebola virus. Ebola Virus Disease in Mbomo killed 128 people in 2003 and in 2005 killed 95% of Odzala National Park's Western Gorilla population. Mbomo village, near Odzala-Kokoua National Park, Republic of Congo, June 2005.. (KEYSTONE/NATURE PICTURE LIBRARY/JABRUSON)

PERSON IN BIOHAZARD SUITS TAKING BLOOD SAMPLE FROM BAT, IN SEARCH FOR THE RESERVOIR HOST OF EBOLA VIRUS. EBOLA VIRUS DISEASE KILLED 128 PEOPLE IN 2003 IN MBOMO AND IN 2005 KILLED 95% OF ODZALA NATIONAL PARK'S WESTERN GORILLA POPULATION. MBOMO VILLAGE, NEA

Person in biohazard suits taking blood sample from bat, in search for the reservoir host of Ebola virus. Ebola Virus Disease killed 128 people in 2003 in Mbomo and in 2005 killed 95% of Odzala National Park's Western Gorilla population. Mbomo village, near Odzala-Kokoua National Park, Republic of Congo, June 2005.. (KEYSTONE/NATURE PICTURE LIBRARY/JABRUSON)

PEOPLE IN BIOHAZARD SUITS TAKING BLOOD SAMPLES FROM BAT TO FIND THE RESERVOIR HOST OF EBOLA VIRUS. EBOLA VIRUS DISEASE IN MBOMO KILLED 128 PEOPLE IN 2003 AND IN 2005 KILLED 95% OF ODZALA NATIONAL PARK'S WESTERN GORILLA POPULATION. MBOMO VILLAGE, NEAR ODZA

People in biohazard suits taking blood samples from bat to find the reservoir host of Ebola virus. Ebola Virus Disease in Mbomo killed 128 people in 2003 and in 2005 killed 95% of Odzala National Park's Western Gorilla population. Mbomo village, near Odzala-Kokoua National Park, Republic of Congo, June 2005.. (KEYSTONE/NATURE PICTURE LIBRARY/JABRUSON)

PEOPLE IN BIOHAZARD SUITS ANALYSING BLOOD SAMPLES TO FIND THE RESERVOIR HOST OF EBOLA VIRUS. EBOLA VIRUS DISEASE IN MBOMO KILLED 128 PEOPLE IN 2003 AND IN 2005 KILLED 95% OF ODZALA NATIONAL PARK'S WESTERN GORILLA POPULATION. MBOMO VILLAGE, NEAR ODZALA-KOK

People in biohazard suits analysing blood samples to find the reservoir host of Ebola virus. Ebola Virus Disease in Mbomo killed 128 people in 2003 and in 2005 killed 95% of Odzala National Park's Western Gorilla population. Mbomo village, near Odzala-Kokoua National Park, Republic of Congo, June 2005.. (KEYSTONE/NATURE PICTURE LIBRARY/JABRUSON)

PEOPLE IN BIOHAZARD SUITS TAKING BLOOD SAMPLE FROM BAT, IN SEARCH FOR THE RESERVOIR HOST OF EBOLA VIRUS. EBOLA VIRUS DISEASE KILLED 128 PEOPLE IN 2003 IN MBOMO AND IN 2005 KILLED 95% OF ODZALA NATIONAL PARK'S WESTERN GORILLA POPULATION. MBOMO VILLAGE, NEA

People in biohazard suits taking blood sample from bat, in search for the reservoir host of Ebola virus. Ebola Virus Disease killed 128 people in 2003 in Mbomo and in 2005 killed 95% of Odzala National Park's Western Gorilla population. Mbomo village, near Odzala-Kokoua National Park, Republic of Congo, June 2005.. (KEYSTONE/NATURE PICTURE LIBRARY/JABRUSON)

PEOPLE IN BIOHAZARD SUITS TAKING BLOOD SAMPLE FROM BAT, IN SEARCH FOR THE RESERVOIR HOST OF EBOLA VIRUS. EBOLA VIRUS DISEASE KILLED 128 PEOPLE IN 2003 IN MBOMO AND IN 2005 KILLED 95% OF ODZALA NATIONAL PARK'S WESTERN GORILLA POPULATION. MBOMO VILLAGE, NEA

People in biohazard suits taking blood sample from bat, in search for the reservoir host of Ebola virus. Ebola Virus Disease killed 128 people in 2003 in Mbomo and in 2005 killed 95% of Odzala National Park's Western Gorilla population. Mbomo village, near Odzala-Kokoua National Park, Republic of Congo, June 2005.. (KEYSTONE/NATURE PICTURE LIBRARY/JABRUSON)

HAMMER HEADED BAT (HYPSIGNATHUS MONSTROSUS) FEMALE - LIVE MIST NET CATCH FOR BLOOD SAMPLING IN SEARCH OF THE UNKNOWN RESERVOIR HOST FOR EBOLA VIRUS. EBOLA OUTBREAKS IN MBOMO IN 2003 KILLED 128 PEOPLE AND IN 2005 KILLIED 95% OF ODZALA NATIONAL PARK'S WESTE

Hammer Headed bat (Hypsignathus monstrosus) female - live mist net catch for blood sampling in search of the unknown reservoir host for Ebola virus. Ebola outbreaks in Mbomo in 2003 killed 128 people and in 2005 killied 95% of Odzala National Park's Western Gorilla population. Mbomo village, near Odzala-Kokoua National Park, Republic of Congo, June 2005.. (KEYSTONE/NATURE PICTURE LIBRARY/JABRUSON)

HAMMER HEADED BAT (HYPSIGNATHUS MONSTROSUS) FEMALE - LIVE MIST NET CATCH FOR BLOOD SAMPLING IN SEARCH OF THE UNKNOWN RESERVOIR HOST FOR EBOLA VIRUS. EBOLA OUTBREAKS IN MBOMO IN 2003 KILLED 128 PEOPLE AND IN 2005 KILLIED 95% OF ODZALA NATIONAL PARK'S WESTE

Hammer Headed bat (Hypsignathus monstrosus) female - live mist net catch for blood sampling in search of the unknown reservoir host for Ebola virus. Ebola outbreaks in Mbomo in 2003 killed 128 people and in 2005 killied 95% of Odzala National Park's Western Gorilla population. Mbomo village, near Odzala-Kokoua National Park, Republic of Congo, June 2005.. (KEYSTONE/NATURE PICTURE LIBRARY/JABRUSON)

HAMMER HEADED BATS (HYPSIGNATHUS MONSTROSUS) IN GLOVED HAND - LIVE MIST NET CATCH FOR BLOOD SAMPLING IN SEARCH OF THE UNKNOWN RESERVOIR HOST FOR EBOLA VIRUS. EBOLA OUTBREAKS IN MBOMO IN 2003 KILLED 128 PEOPLE AND IN 2005 KILLIED 95% OF ODZALA NATIONAL PAR

Hammer Headed bats (Hypsignathus monstrosus) in gloved hand - live mist net catch for blood sampling in search of the unknown reservoir host for Ebola virus. Ebola outbreaks in Mbomo in 2003 killed 128 people and in 2005 killied 95% of Odzala National Park's Western Gorilla population. Mbomo village, near Odzala-Kokoua National Park, Republic of Congo, June 2005.. (KEYSTONE/NATURE PICTURE LIBRARY/Jabruson)

WESTERN GORILLA (GORILLA GORILLA) SILVERBACK SKULL WITH BUTTERFLY (BELENOIS THESZI). GORILLA DIEDD FROM THE EBOLA VIRUS, WHICH KILLED 128 PEOPLE IN THE REGION IN 2003 AND IN 2005 KILLED 95% OF THE GORILLA POPULATION IN THE ODZALA KOKOUA NP, REPUBLIC OF CO

Western Gorilla (Gorilla gorilla) silverback skull with butterfly (Belenois theszi). Gorilla diedd from the Ebola Virus, which killed 128 people in the region in 2003 and in 2005 killed 95% of the Gorilla population in the Odzala Kokoua NP, Republic of Congo, June 2004.. (KEYSTONE/NATURE PICTURE LIBRARY/Jabruson)

COTTON APHID, SEM

Coloured scanning electron micrograph (SEM) of Cotton aphid (Aphis gossypii) is most commonly associated with outbreaks on cotton in the Southeast. It has many generations per year and is often resistant to various classes of insecticides. It is also subject to heavy mortality via predation and parasitism (ladybugs and braconid wasps). Ants are commonly found associated with melon aphid but they are there to collect honeydew. It is also known as the melon aphid. Magnification: x16 when shortest axis printed at 25 millimetres.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

MAYARO VIRUS, MOLECULAR MODEL

Mayaro virus, molecular model. This virus, transmitted by Aedes sp. mosquitoes in South America, causes fever and joint pain in human, similar to dengue fever. It consists of RNA (ribonucleic acid) genetic material, surrounded by a protein capsid, which is itself surrounded by a lipid envelope.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/ANIMATE4.COM/SCIENCE PHOTO LIBARY)

COTTON APHID, SEM

Coloured scanning electron micrograph (SEM) of Cotton aphid (Aphis gossypii) is most commonly associated with outbreaks on cotton in the Southeast. It has many generations per year and is often resistant to various classes of insecticides. It is also subject to heavy mortality via predation and parasitism (ladybugs and braconid wasps). Ants are commonly found associated with melon aphid but they are there to collect honeydew. It is also known as the melon aphid. Magnification: x16 when shortest axis printed at 25 millimetres.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

ZIKA VIRUS, MOLECULAR MODEL

Zika virus envelope, molecular model. This is an RNA (ribonucleic acid) virus from the Flaviviridae family. It is transmitted to humans via the bite of an infected Aedes sp. mosquito. It causes zika fever, a mild disease with symptoms including rash, joint pain and conjunctivitis. In 2015 a previously unknown connection between Zika infection in pregnant women and microcephaly (small head) in newborns was reported. This can cause miscarriage or death soon after birth, or lead to developmental delays and disorders.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/ANIMATE4.COM/SCIENCE PHOTO LIBARY)

MAYARO VIRUS, MOLECULAR MODEL

Mayaro virus, molecular model. This virus, transmitted by Aedes sp. mosquitoes in South America, causes fever and joint pain in human, similar to dengue fever. It consists of RNA (ribonucleic acid) genetic material, surrounded by a protein capsid, which is itself surrounded by a lipid envelope.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/ANIMATE4.COM/SCIENCE PHOTO LIBARY)

CHIKUNGUNYA VIRUS CAPSID

Chikungunya virus capsid, molecular model. This virus, transmitted by mosquitoes in tropical Africa and Asia, causes fever and joint pain in humans, similar to dengue fever. In viruses, the capsid is the protein shell that encloses the genetic material. A capsid consists of subunits called capsomeres that self-assemble to form the shell seen here. This shell, approximately spherical in shape, has icosahedral symmetry. One of the functions of the capsid is to aid the transmission of the viral genetic material into host cells.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/ANIMATE4.COM/SCIENCE PHOTO LIBARY)

CITRUS AFFECTED BY TRISTEZA VIRUS (LONG FORM: CITRUS TRISTEZA CLOSTEROVIRUS), CRETE.

Citrus affected by tristeza virus (long form: Citrus tristeza closterovirus), Crete.. (KEYSTONE/BIOSPHOTO/JEAN-MICHEL GROULT)

ZIKA VIRUS, TEM

Coloured transmission electron micrograph (TEM) of Zika virus particles (orange) isolated in kidney epithelial cells (Vero E6 cells). Zika viruses have a dense core surrounded by an envelope (40nm size). Zika virus is a RNA (ribonucleic acid) virus in the family Flaviviridae and causes Zika fever, or Zika disease. Aedes aegypti mosquitoes can transmit Zika virus to humans. Zika fever was first discovered in equatorial Africa and Asia in the late 1940s. From 2014-16 Zika fever has spread to South America. It has recently spread to the islands in the Caribbean. There is a possible link between Zika fever and microcephaly in newborn babies of mothers who have been infected with the Zika virus. In February 2016 Zika virus was discovered to be sexually transmitted in the USA. Magnification: x191, 200 when shortest axis printed at 25 millimetres. Image courtesy of Cynthia S Goldsmith/CDC.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

HIV INFECTION IN LYMPH TISSUE, TEM

HIV infection, coloured transmission electron micrograph (TEM). Mature virus and budding release of HIV in human lymph tissue (RNA virus, Retroviridae Family). In retroviruses the nucleocapsid buds directly through the cytoplasmic membrane. This produces an enveloped virion during the release process. HIV (human immunodeficiency virus) is a lentivirus (a subgroup of retrovirus) that causes HIV infection. Extened HIV infection can lead to acquired immunodeficiency syndrome (AIDS). AIDS in humans lead to failure of the immune system and causes life-threatening opportunistic infections (and cancers) to thrive. Infection with HIV occurs by the transfer of blood, semen, vaginal fluid, pre-ejaculate, or breast milk. Within these body fluids, HIV exists as both free virus particles and viruses within infected immune cells. HIV infects CD4+ helper T cells), dendritic cells and macrophages. Magnification: x16, 260 when shortest axis printed at 25(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

HIV INFECTION IN LYMPH TISSUE, TEM

HIV infection, coloured transmission electron micrograph (TEM). Mature virus and budding release of HIV in human lymph tissue (RNA virus, Retroviridae Family). In retroviruses the nucleocapsid buds directly through the cytoplasmic membrane. This produces an enveloped virion during the release process. HIV (human immunodeficiency virus) is a lentivirus (a subgroup of retrovirus) that causes HIV infection. Extened HIV infection can lead to acquired immunodeficiency syndrome (AIDS). AIDS in humans lead to failure of the immune system and causes life-threatening opportunistic infections (and cancers) to thrive. Infection with HIV occurs by the transfer of blood, semen, vaginal fluid, pre-ejaculate, or breast milk. Within these body fluids, HIV exists as both free virus particles and viruses within infected immune cells. HIV infects CD4+ helper T cells), dendritic cells and macrophages. Magnification: x16, 260 when shortest axis printed at 25(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

ZIKA VIRUS, TEM

Coloured transmission electron micrograph (TEM) of Zika virus particles (green) isolated in kidney epithelial cells (Vero E6 cells). Zika viruses have a dense core surrounded by an envelope (40nm size). Zika virus is a RNA (ribonucleic acid) virus in the family Flaviviridae and causes Zika fever, or Zika disease. Aedes aegypti mosquitoes can transmit Zika virus to humans. Zika fever was first discovered in equatorial Africa and Asia in the late 1940s. From 2014-16 Zika fever has spread to South America. It has recently spread to the islands in the Caribbean. There is a possible link between Zika fever and microcephaly in newborn babies of mothers who have been infected with the Zika virus. In February 2016 Zika virus was discovered to be sexually transmitted in the USA. Magnification: x191, 200 when shortest axis printed at 25 millimetres. Image courtesy of Cynthia S Goldsmith/CDC.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

ZIKA VIRUS, TEM

Coloured transmission electron micrograph (TEM) of Zika virus particles (red) isolated in kidney epithelial cells (Vero E6 cells). Zika viruses have a dense core surrounded by an envelope (40nm size). Zika virus is a RNA (ribonucleic acid) virus in the family Flaviviridae and causes Zika fever, or Zika disease. Aedes aegypti mosquitoes can transmit Zika virus to humans. Zika fever was first discovered in equatorial Africa and Asia in the late 1940s. From 2014-16 Zika fever has spread to South America. It has recently spread to the islands in the Caribbean. There is a possible link between Zika fever and microcephaly in newborn babies of mothers who have been infected with the Zika virus. In February 2016 Zika virus was discovered to be sexually transmitted in the USA. Magnification: x191, 200 when shortest axis printed at 25 millimetres. Image courtesy of Cynthia S Goldsmith/CDC.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

ZIKA VIRUS, TEM

Coloured transmission electron micrograph (TEM) of Zika virus particles (pink) isolated in kidney epithelial cells (Vero E6 cells). Zika viruses have a dense core surrounded by an envelope (40nm size). Zika virus is a RNA (ribonucleic acid) virus in the family Flaviviridae and causes Zika fever, or Zika disease. Aedes aegypti mosquitoes can transmit Zika virus to humans. Zika fever was first discovered in equatorial Africa and Asia in the late 1940s. From 2014-16 Zika fever has spread to South America. It has recently spread to the islands in the Caribbean. There is a possible link between Zika fever and microcephaly in newborn babies of mothers who have been infected with the Zika virus. In February 2016 Zika virus was discovered to be sexually transmitted in the USA. Magnification: x191, 200 when shortest axis printed at 25 millimetres. Image courtesy of Cynthia S Goldsmith/CDC.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

T LYMPHOCYTE WITH HTLV-1 INFECTION, SEM

Human T lymphocyte with HTLV-1 infection (RNA virus, Retroviridae Family), coloured scanning electron micrograph (SEM). The virus is in a large clump in the corner. Human T-lymphotropic virus or human T-cell lymphotropic virus (HTLV) is a family of human retroviruses that are known to cause a type of cancer called adult T-cell leukaemia/lymphoma and a demyelinating disease called HTLV-I associated myelopathy/tropical spastic paraparesis (HAM/TSP). The HTLVs belong to a larger group of primate T-lymphotropic viruses (PTLVs). Magnification: x3, 300 when shortest axis printed at 25 millimetres.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

T LYMPHOCYTE WITH HTLV-1 INFECTION, SEM

Human T lymphocyte with HTLV-1 infection, coloured scanning electron micrograph (SEM). The virus is centrally located in a large clump (RNA virus, Retroviridae Family). Human T-lymphotropic virus or human T-cell lymphotropic virus (HTLV) is a family of human retroviruses that are known to cause a type of cancer called adult T-cell leukaemia/lymphoma and a demyelinating disease called HTLV-I associated myelopathy/tropical spastic paraparesis (HAM/TSP). The HTLVs belong to a larger group of primate T-lymphotropic viruses (PTLVs). Magnification: x3, 000 when shortest axis printed at 25 millimetres.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

T LYMPHOCYTE WITH HTLV-1 INFECTION, SEM

Human T lymphocyte with HTLV-1 infection, coloured scanning electron micrograph (SEM). The virus is centrally located in a large clump (RNA virus, Retroviridae Family). Human T-lymphotropic virus or human T-cell lymphotropic virus (HTLV) is a family of human retroviruses that are known to cause a type of cancer called adult T-cell leukaemia/lymphoma and a demyelinating disease called HTLV-I associated myelopathy/tropical spastic paraparesis (HAM/TSP). The HTLVs belong to a larger group of primate T-lymphotropic viruses (PTLVs). Magnification: x3, 000 when shortest axis printed at 25 millimetres.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

RESPIRATORY SYNCYTIAL VIRUS, TEM

Respiratory syncytial virus (RSV, RNA virus) is a member of the paramyxovirus group that is a major cause of respiratory tract infections in all ages, coloured transmission electron micrograph (TEM). In adults the virus only affects the upper respiratory tract, but infants and young children may be more severely affected and develop bronchiolitis (inflammation of the small airways, or bronchioles, in the lungs) or potentially fatal bronchopneumonia. RSV is more often being recognized as an important cause of respiratory illness in older adults. Magnification: x29, 500 when shortest axis printed at 25 millimetres. Original image courtesy of the CDC.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)

RESPIRATORY SYNCYTIAL VIRUS, TEM

Respiratory syncytial virus (RSV, RNA virus) is a member of the paramyxovirus group that is a major cause of respiratory tract infections in all ages, coloured transmission electron micrograph (TEM). In adults the virus only affects the upper respiratory tract, but infants and young children may be more severely affected and develop bronchiolitis (inflammation of the small airways, or bronchioles, in the lungs) or potentially fatal bronchopneumonia. RSV is more often being recognized as an important cause of respiratory illness in older adults. Magnification: x29, 500 when shortest axis printed at 25 millimetres. Original image courtesy of the CDC.(KEYSTONE/SCIENCE PHOTO LIBRARY SPL/DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY)