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 acute respiratory disease

- Most of South America reported unchanged or decreasing trends of acute respiratory disease, with the exception of Ecuador and Venezuela, which reported increasing trends for the second consecutive week

- A median of 99.9% of subtyped influenza A viruses were pandemic (H1N1) 2009

- The United States reported a total of 23 oseltamivir-resistant pandemic (H1N1) 2009 cases since April 2009

- 518 new confirmed deaths in 11 countries were reported; in total there have been 5,878 cumulative confirmed deaths