Stock Photo - INFLUENZA VIRUS<BR>Influenza virus. Member of the orthomyxoviridae family, this is the same type of virus as the avian influenza strain. The flu virus causes the contagious respiratory infection and measures 100 nanometers in diameter on average. Viral particles evolve from one localized, seasonal forms to another, occasionally causing international epidemics.

Stock Photo: INFLUENZA VIRUS<BR>Influenza virus. Member of the orthomyxoviridae family, this is the same type of virus as the avian influenza strain.

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