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This report provides an update to the international situation as of March 12, 2010. The World Health Organization (WHO) continues to report updated 2009 H1N1 flu-associated laboratory-confirmed cases and deaths on its Web page.

CDC has again updated its estimates of the total number of 2009 H1N1 cases, hospitalizations and deaths in the United States since April, 2009. The new estimates incorporate an additional four weeks of flu data from the previous estimates released on February 12, 2010.

During week 9 (February 28 - March 6, 2010), influenza activity remained at approximately the same levels as last week in the U.S. 174 (5.1%) specimens tested by U.S. World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories and reported to CDC/Influenza Division were positive for influenza.

FluView reports that for the week of February 21 - February 27, 2010, flu activity in the United States was relatively low, with most flu continuing to be caused by 2009 H1N1. Flu activity, caused by either 2009 H1N1 or seasonal flu viruses, may rise and fall, but is expected to continue for weeks. It’s possible that the United States could experience another wave of flu activity caused by either 2009 H1N1 or seasonal influenza.

This is a letter developed jointly by the American College Health Association (ACHA) and CDC intended for distribution to colleges and universities across the country prior to Spring Break. The message to students is: Don't let influenza spoil your plans for Spring Break. Take the opportunity to get vaccinated before leaving for Spring Break and protect yourself, friends and family against 2009 H1N1 flu.

As of 7 March 2010, worldwide more than 213 countries and overseas territories or communities have reported laboratory confirmed cases of pandemic influenza H1N1 2009, including at least 16713 deaths.

As of 28 February 2010, worldwide more than 213 countries and overseas territories or communities have reported laboratory confirmed cases of pandemic influenza H1N1 2009, including at least 16455 deaths.

As of 21 February 2010, worldwide more than 213 countries and overseas territories or communities have reported laboratory confirmed cases of pandemic influenza H1N1 2009, including at least 16226 deaths.

The Emergency Committee held its seventh meeting by teleconference on 23 February 2010. The Director-General sought the Committee's views on the determination of the pandemic status.

As of 14 February 2010, worldwide more than 212 countries and overseas territories or communities have reported laboratory confirmed cases of pandemic influenza H1N1 2009, including at least 15921 deaths.