Sunday, February 7, 2010

Not Gone Just Yet...H1N1

It's not making much top line news these days with all the stock news, regular economic news, horrible storm headlines such as Haiti...

But don't scratch H1N1 off your list of concerns just yet. There is still growth of new illnesses in several areas. Not panic-worthy, no, but considering they've all but ended base testing for many many months now, growth of even a small amount shows we'll be hearing whispers about this into spring again this year.

:::Situation Update, 
February 6, 2010 
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 January 24-30, 2010, most key flu indicators remained about the same as during the previous week. Below is a summary of the most recent key indicators:

• Visits to doctors for influenza-like illness (ILI) nationally are low. ILI is also looked at by Region. Of 10 regions in the United States, ILI declined or remained about the same, except for in one region of the country.
In Region 10 (Arkansas, Oregon, Idaho and Washington), ILI activity increased, but still remains low overall.

• Overall cumulative hospitalization rates for the 2009-10 influenza season have leveled off in all age groups and very few 2009 H1N1-laboratory confirmed hospitalizations were reported by states during the week ending January 30.

• The proportion of deaths attributed to pneumonia and influenza (P&I) based on the 122 Cities Report decreased slightly over the previous week, but is still higher than expected for this time of year.
In addition, another nine flu-related pediatric deaths were reported this week: eight of these deaths were associated with laboratory confirmed 2009 H1N1, and one death was associated with an influenza A virus for which the subtype was undetermined.
Since April 2009, CDC has received reports of 321 laboratory-confirmed pediatric deaths: 272 due to 2009 H1N1, 47 pediatric deaths that were laboratory confirmed as influenza, but the flu virus subtype was not determined, and two pediatric deaths that were associated with seasonal influenza viruses.

Laboratory-confirmed deaths are thought to represent an undercount of the actual number. CDC has provided estimates about the number of 2009 H1N1 cases and related hospitalizations and deaths.

• No states reported widespread influenza activity. Six states reported regional influenza activity.
They are: Alabama, Georgia, Maine, New Jersey, New Mexico and Virginia.

Almost all of the influenza viruses identified so far continue to be 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.

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