Mar 22 2008
Innocent Numbers and Letters that Reflect a Serious Flu
Like humans and other species, birds are susceptible to flu. There are 15 types of bird, or avian, flu. The most contagious strains, which are usually fatal in birds, are H5 and H7. There are nine different types of H5. The nine all take different forms - some are highly pathogenic, while some are pretty [...]