(CIDRAP News) – Influenza is widespread in eight US states, and some other indicators of an early flu season continue to rise, the Centers for Disease Control and Prevention (CDC) said today.
The percentage of patients' respiratory samples testing positive for flu grew to 20.7% in the week ending Dec 1, up from 15.2% the week before. And, as before, the H3N2 strain continues to dominate, which can be a sign of a more severe flu season.
(CIDRAP News) – The World Health Organization (WHO) is recommending that influenza vaccines for the Southern Hemisphere's 2013 flu season should contain the same three strains as the vaccines now being administered to millions in the Northern Hemisphere.