How Nature Builds A Pandemic Flu Virus

Here's a sobering thought: Wild birds€” including city pigeons and ubiquitous Canadian geese€” carry 170 different types of bird flu. You know, all those viruses with the Hs and Ns in their names, like H1N1 and H5N1.
Source: RWJF News Digest - Public Health - Category: American Health Source Type: news