News & Perspective

Sep 30, 2011

Sep 30, 2011

Study suggests 1918 flu waves were caused by 'distinct' viruses

(CIDRAP News) – A new analysis of influenza outbreak patterns in several navies in 1918 suggests that the first and second waves of the pandemic were caused by "antigenically distinct" viruses, a conclusion that runs counter to some other recent studies that have tried to discern why the second wave was so much more deadly than the first.