Articles tagged with: Global Program for Avian Influenza and Human Pandemic Preparedness and Response
India, World Bank »
Global Situation. Influenza is an acute viral disease of the respiratory tract caused by influenza viruses A, B or C. These A, B and C viruses are antigenically distinct and there is no cross immunity between them. While all three influenza viruses may affect humans, in lower animals and birds, influenza A viruses are of primary concern.
