This report provides an update to the international situation as of February 27, 2010. The World Health Organization (WHO) continues to report updated 2009 H1N1 flu-associated laboratory-confirmed cases and deaths on its Web page.

During week 8 (February 21-27, 2010), influenza activity remained at approximately the same levels as last week in the U.S. 263 (6.4%) 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.

Graphical representations of CDC's latest estimates for 2009 H1N1 cases, hospitalizations and deaths in the United States, April 2009 - January 16, 2010.

This report provides an update to the international situation as of February 20, 2010. The World Health Organization (WHO) continues to report updated 2009 H1N1 flu-associated laboratory-confirmed cases and deaths on its Web page.

During week 7 (February 14-20, 2010), influenza activity remained at approximately the same levels as last week in the U.S. 185 (4.4%) 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 14 - February 20, 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.

Questions and answers related to underlying health conditions among adults and children hospitalized with 2009 H1N1 in the United States from April 2009 through February 16, 2010.

This page provides a summary of the Behavioral Risk Factor Surveillance System (BRFSS) and how it helps track influenza activity.

This page provides summary information about the impact of 2009 H1N1 across racial and ethnic groups in the United States.

Target audience: State health planners This document is intended to provide PHER funded grantees with information regarding the reduction of vaccine inventory and allocation at the McKesson 2009 H1N1 vaccine/ancillary supply distribution depots.

Target audience: State health planners. This document is intended to provide PHER funded grantees with information regarding the reduction of vaccine inventory and allocation at the McKesson 2009 H1N1 vaccine/ancillary supply distribution depots.

During week 6 (February 7-13, 2010), influenza activity remained at approximately the same levels as last week in the U.S. 129 (3.5%) 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 7 - February 13, 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, or more likely, localized outbreaks of 2009 H1N1 in communities that have been relatively unaffected by illness thus far, or where 2009 H1N1 vaccination rates may have been lower.

Morbidity and Mortality Weekly Report (MMWR) February 19, 2010 / 59(06);162-165

This Q&A provides updated information about flu-related hospitalizations and deaths in the United States reported to CDC from April 2009 - January 30, 2010.

CDC has updated its estimates of the total number of 2009 H1N1 cases, hospitalizations and deaths in the United States since April, 2009.

During week 5 (January 31-February 6, 2010), influenza activity remained at approximately the same levels as last week in the U.S. 206 (4.8%) 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 January 31 - February 6, 2010, flu activity in the United States remained about the same as during the previous week. Flu activity is relatively low at this time, 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 it is expected to continue for several more months.

These questions and answers summarize the current understanding of the impact of 2009 H1N1 and seasonal influenza virus on Hispanics/Latinos, describe some of the barriers to uptake of 2009 H1N1 and seasonal influenza vaccines, and outline potential strategies for improving health and increasing vaccine coverage in Hispanic/Latino communities.