Influenza has two ways to change — one slow and one fast. The slow change is called “drift” — the virus gradually accumulates individual mutations until its surface proteins are no longer recognized by our immune system. The fast change […]
The influenza virus family is very large. Almost all vertebrates, including birds, seals, pigs, horses and humans, can be infected by at least one influenza strain. Wild birds, especially waterfowl like ducks and geese, carry dozens of different influenza strains. These […]
Bird flu poses no immediate threat to the average person. The only people who have been infected with the highly pathogenic H5N1 bird flu that has periodically caused epidemics in poultry in the last decade are those […]
After an epidemic, shouldn’t everyone be immune to the virus? Why is influenza able to come back again and again? The answer lies in the virus’s genetic structure and high mutation rate. The truth of the matter […]
Influenza is both the name of a disease and the name of the virus that causes it. The influenza virus’s life strategy makes it a serious threat, both to individuals and to the community. Learning a little bit about […]
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