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01 Dec 2009 description

The information contained within this update is obtained from data provided by Ministries of Health of Member States and National Influenza Centers through reports sent to Pan American Health Organization (PAHO) or updates on their web pages.

Weekly Update

- In North America, acute respiratory disease activity remained above what is expected for this time of year; however, overall trends in acute respiratory disease are decreasing

- In the Caribbean, variable trends in acute respiratory disease are being reported

- Central America reported decreasing or unchanged trends in …