Where did these new viruses (bird flu, etc) come from?

bird flu came from chickens, somehow a virus developed between them, and eventually it reached humans.

Where did these new viruses (bird flu, etc) come from?abtuvurys 2005

It's called evolution,,,something the religious right refuses to recognize.

Where did these new viruses (bird flu, etc) come from?antivirus programs

mutations
bird flu is d result of an infection in chickens which happens rarely and it is highly contagious so when bird flu strikes, one should stop eating chicken as it gets transferred to humans very easily...therefore go wid d saying...precaution is better than cure...