Saturday, October 17, 2009

CDC H1N1 Flu Website Situation Update, October 17, 2009

Sent from my BlackBerry® smartphone

Vaccine Supply Status

Nationwide distribution of the H1N1 (Swine) flu vaccine is underway to all states. Approximately 6 million doses have been shipped throughout the United States. A weekly update on the vaccine supply and shipment status, complete with state-by-state numbers, is now available on the CDC website.

View the Vaccine Supply Status page;

Key Flu Indicators

Each week CDC analyzes information about influenza disease activity in the United States and publishes findings of key flu indicators in a report called FluView. During the week of October 4-10, 2009, a review of the key indicators found that influenza activity continued to increase in the United States from the previous week. Below is a summary of the most recent key indicators:

  • Visits to doctors for influenza-like illness (ILI) continued to increase in the United States, and overall, are higher than what is expected for this time of the year. ILI activity now is equal to or higher than what is seen at the peak of many regular flu seasons.
  • Total influenza hospitalization rates for laboratory-confirmed flu are climbing and are higher than expected for this time of year.
  • The proportion of deaths attributed to pneumonia and influenza (P&I) based on the 122 Cities Report has increased and exceeds what is normally expected at this time of year. In addition, 11 flu-related pediatric deaths were reported this week; 10 of these deaths were confirmed 2009 H1N1, and one was influenza A virus, but unsubtyped. Since April 2009, there have been 86 confirmed pediatric 2009 H1N1 deaths; 39 of these have been reported to CDC since August 30, 2009.
  • Forty-one states are reporting widespread influenza activity at this time. They are: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Delaware, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, South Dakota, Texas, Tennessee, Utah, Virginia, Washington, West Virginia, Wisconsin, and Wyoming. This many reports of widespread activity are unprecedented during seasonal flu.
  • Almost all of the influenza viruses identified so far are 2009 H1N1 influenza A viruses. These viruses remain similar to the virus chosen for the 2009 H1N1 vaccine, and remain susceptible to the antiviral drugs oseltamivir and zanamivir with rare exception.
Learn more;

U.S. Situation Update

Weekly Flu Activity Estimates

U.S. Patient Visits Reported for Influenza-like Illness (ILI)

U.S. Influenza-like Illness (ILI) Reported by Regions

U.S. Influenza and Pneumonia-Associated Hospitalizations
and Deaths from August 30 – October 10, 2009

Posted October 16, 2009, 11:00 AM ET
Data reported to CDC by October 13, 2009, 12:00 AM ET
Cases Defined by
Hospitalizations
Deaths
Influenza and Pneumonia Syndrome* 15,696 2,029
Influenza Laboratory-Tests** 4,958 292

*Reports can be based on syndromic, admission or discharge data, or a combination of data elements that could include laboratory-confirmed and influenza-like illness hospitalizations.

**Laboratory confirmation includes any positive influenza test (rapid influenza tests, RT-PCR, DFA, IFA, or culture), whether or not typing was done.

This table is based on data reported to CDC by U.S. states and territories from a new influenza and pneumonia hospitalizations and deaths web-based reporting system. This system will be used to monitor trends in activity for the 2009-10 influenza season. This is a cumulative count beginning August 30, 2009. The table shows aggregate reports of all influenza and pneumonia-associated hospitalizations and deaths (including 2009 H1N1 and seasonal flu) since August 30, 2009 received by CDC from U.S. states and territories. This table will be updated weekly each Friday at 11 a.m. For the 2009-2010 influenza season, states are reporting based on new case definitions for hospitalizations and deaths effective August 30, 2009.

CDC will continue to use its traditional surveillance systems to track the progress of the 2009-2010 influenza season. For more information about influenza surveillance, including reporting of influenza-associated hospitalizations and deaths, see Questions and Answers: Monitoring Influenza Activity, Including 2009 H1N1.

The number of 2009 H1N1 hospitalizations and deaths reported to CDC from April – August 2009 is available on the Past Situation Updates page.

For state level information, refer to state health departments.

International Human Cases of 2009 H1N1 Flu Infection
See: World Health Organization.

For more information about the U.S. situation, see the CDC H1N1 Flu U.S. Situation Update page.

International Situation Update

This report provides an update to the international situation as of October 16, 2009. The World Health Organization (WHO) continues to report laboratory-confirmed 2009 H1N1 flu cases and deaths on its Web page. These laboratory-confirmed cases represent a substantial underestimation of total cases in the world, as many countries focus surveillance and laboratory testing only on people with severe illness. The 2009 H1N1 influenza virus continues to be the dominant influenza virus in circulation in the world. Since April 19, 2009, over half of all influenza positive specimens reported to WHO were 2009 H1N1. In temperate regions of the Southern Hemisphere, disease due to 2009 H1N1 has returned to below baseline. In tropical regions of the Americas and Asia, influenza activity due to 2009 H1N1 remains variable. In temperate regions of the Northern Hemisphere, there is increased influenza-like illness (ILI) activity due to 2009 H1N1 in many areas, including Western Europe and Northern Asia, most of the United States, and parts of Mexico and Canada.

For more information about the international situation, see the CDC H1N1 Flu International Situation Update page.

CDC Experts Contributing to WebMD's Focus on Flu Blog

Follow CDC Experts on WebMDs Flu Blog – Visit NowIn collaboration with WebMD, experts from the Centers for Disease Control and Prevention will be guest blogging and helping to answer questions on WebMD's Focus on Flu Blog. Launched on October 7th, Dr. Anthony Fiore (NCIRD) has since posted two blogs entries, October 7, 2009, “CDC Update on Flu and the H1N1 Vaccine” and October 14, "Flu Shot or Nasal Spray Vaccine?". The Focus on Flu blog is scheduled to run through the end of December.

Recent Updates of Interest

Additional Updates on the CDC H1N1 Flu Website

To learn about other recent updates made to the CDC H1N1 Flu Website, please check the "What's New" page on the CDC H1N1 Flu website.

No comments:

Post a Comment