Bird Flu (Avian Influenza)
Bird flu is a serious illness that affects the lungs. Currently, this illness mainly infects ... Influenza) Bird flu (avian influenza) is a serious illness that affects the lungs. Currently, this ... 89219;Avian Influenza;Bird Flu;avian influenza, risk factors;bird flu, risk factors;avian influenza ... , spread;bird flu, spread;avian influenza, symptoms;bird flu, symptoms;avian influenza, treatment;bird flu, treatment