The style and purpose of viruses runs the gamut. Following is a small sampling. See Sophos and virus. The fastest spreading virus in history appears to have been written by a resident of Manila in the ...

Viruses are microscopic particles that are present in animals, plants, and other living organisms. They can sometimes cause diseases, such as the flu and COVID-19. Viruses are biological entities that ...

Influenza, or flu, is a viral infection that affects the respiratory system. Influenza A is one of four types of the virus, which can cause a cough, body aches, and a sore throat. The influenza A ...

Here are some of the terms and phrases you need to know to understand the virus and how it spreads. By Jenny Gross and Mariel Padilla When is an epidemic considered a pandemic, and what is the ...