Pandemic

Pandemics and epidemics are large scale outbreaks of infectious disease that can greatly increase morbidity and mortality and cause significant economic and social disruption.

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Influenza viruses - Stock Image - M055/0245

Influenza viruses. Coloured transmission electron micrograph (TEM) of influenza (flu) viruses. The flu virus belongs to the orthomyxovirus group of viruses which have an affinity for mucus. It contains a core of RNA (ribonucleic acid) genetic material inside a protein coat or capsid.

Avian flu virus, TEM - Stock Image - M055/0299

Avian flu. Coloured transmission electron micrograph (TEM) of influenza A virus particles (red). This is strain H5N1, which usually infects poultry, but began infecting humans in Hong Kong in 1997. Direct bird-human contact is necessary for transmission of the disease.

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Virus Symptoms

Human Cell

Scanning Electron Micrograph

Complex Systems

Immune Response

Australian flu infection, SEM - Stock Image - C040/5176

Coloured scanning electron micrograph (SEM) of a human cell infected with H3N2 flu virus. Influenza (flu) is an infectious disease caused by an influenza virus. Symptoms can be mild to severe.

H3N2 influenza virus particles, coloured transmission electron micrograph (TEM). Each virus consists of a nucleocapsid (protein coat) that surrounds a core of RNA (ribonucleic acid) genetic material. Surrounding the nucleocapsid is a lipid envelope that contains the glycoprotein spikes haemagglutinin (H) and neuraminidase (N). Congested Nose, Persistent Cough, Viral Infection, Body Ache, Runny Nose, Medical Science

H3N2 influenza virus particles, TEM - Stock Image - F020/9648

H3N2 influenza virus particles, coloured transmission electron micrograph (TEM). Each virus consists of a nucleocapsid (protein coat) that surrounds a core of RNA (ribonucleic acid) genetic material. Surrounding the nucleocapsid is a lipid envelope that contains the glycoprotein spikes haemagglutinin (H) and neuraminidase (N).

H3N2 influenza virus particles, TEM - Stock Image - F020/9647

Flu viruses - Stock Image - M055/0385

Flu viruses. Conceptual image of influenza viruses (brown) in the airways of the lung. The virus particles are not at the same scale as the lung cilia (blue). Each virus consists of a core of RNA (ribonucleic acid) genetic material surrounded by a protein coat (brown).

Swine flu virus. Transmission electron micrograph (TEM) of SW31 (swine strain) influenza (flu) virus particles (green) budding from the surface of an MDCK cultured cell (pink). Swine flu is an infection caused by any one of several types of flu viruses that are endemic to pigs. Research Facility, Photo Macro, A Cell, Photo Library

Swine flu virus, TEM - Stock Image - C046/8217

Swine flu virus. Transmission electron micrograph (TEM) of SW31 (swine strain) influenza (flu) virus particles (green) budding from the surface of an MDCK cultured cell (pink). Swine flu is an infection caused by any one of several types of flu viruses that are endemic to pigs.