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U.S. flu activity down, but influenza B up, 342 deaths in California

U.S. flu activity down, but influenza B up, 342 deaths in California

March 28 (UPI) -- During most of this year's flu season, the influenza A (H1N1) 2009 pandemic was the main strain making people ill, but more influenza B was being reported.
Alex Cukan
Survey: Nevada adults most likely being sick with flu

Survey: Nevada adults most likely being sick with flu

WASHINGTON, Feb. 28 (UPI) -- Nevada adults are the most likely to report being sick with the flu on any given day last year, with California and New York close behind, a survey indicates.
U.S. flu activity down -- no states report high flu activity

U.S. flu activity down -- no states report high flu activity

ATLANTA, Feb. 21 (UPI) -- For the week ending Feb. 15, U.S. influenza activity dropped and no states reported high influenza-like illness, down from six states last week, officials say.
CDC: U.S. adults ages 18-64 hard hit by influenza

CDC: U.S. adults ages 18-64 hard hit by influenza

ATLANTA, Feb. 20 (UPI) -- This year's influenza season was hard -- more deaths and more hospitalizations -- on younger- and middle-age adults ages 18 to 64, U.S. officials say.

Egyptian medics angry over flu vaccine shortage

CAIRO, Feb. 8 (UPI) -- Egyptian paramedics said they may refuse to handle cases of suspected bird flu because the government has not given them a flu shot.
More than 200 died from influenza this flu season in Calif.

More than 200 died from influenza this flu season in Calif.

SACRAMENTO, Feb. 7 (UPI) -- California state health officials say the confirmed death toll for influenza increased by 56 last week for a total of 202 confirmed deaths for this flu season.
H1N1 circulating since 2009, many still at risk

H1N1 circulating since 2009, many still at risk

SAN FRANCISCO, Jan. 25 (UPI) -- Despite its circulation since 2009, immunity to the flu strain A(H1N1)2009 is not sufficiently high and many people remain susceptible, U.S. researchers say.
High flu activity down in Southeast, up in West and Northeast

High flu activity down in Southeast, up in West and Northeast

ATLANTA, Jan. 24 (UPI) -- For the week ending Jan. 18, U.S. flu activity went down in the Southeast, but increased in other parts of the country, federal health officials say.

Two cases of H1N1 virus confirmed in Vietnam

HANOI, Vietnam, Jan. 22 (UPI) -- Thirteen high school students in Hanoi, Vietnam, are suspected to have contracted the swine virus, the Health Ministry said.

Flu vaccine reduces risk of illness by half in pregnant women

ATLANTA, Jan. 19 (UPI) -- Vaccination reduced the risk of pregnant women getting the flu by half from 2010 to 2012, federal health officials said.
U.S. adults ages 18-64 least likely to get annual flu shot

U.S. adults ages 18-64 least likely to get annual flu shot

WASHINGTON, Jan. 18 (UPI) -- Only slightly more than a third of Americans 18-64 got vaccinated against the flu last season, which a non-profit health group says it finds "troubling."

Spain notes flu outbreak

MADRID, Jan. 18 (UPI) -- An influenza outbreak has been reported in Spain, where officials said 239 people have been hospitalized, many with H1N1, the strain known as bird flu.
CDC: Flu activity high in South, no real activity in Northeast

CDC: Flu activity high in South, no real activity in Northeast

ATLANTA, Jan. 17 (UPI) -- Flu activity was high in the U.S. South last week and was increasing in some states, while it had yet to hit the Northeast, officials say.
Some indigenous people more susceptible to new flu strains

Some indigenous people more susceptible to new flu strains

MELBOURNE, Jan. 11 (UPI) -- Some indigenous groups are more susceptible to the effects of the new strain of influenza -- H7N9 -- currently found in China, researchers in Australia said.
Flu high in South and South Central states, low in Northeast

Flu high in South and South Central states, low in Northeast

ATLANTA, Jan. 10 (UPI) -- Influenza activity remained high in the U.S. South and South Central states for the week ending Jan. 4, but remains low in the Northeast, officials say.
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Wiki

Influenza A (H1N1) virus is a subtype of influenza A virus and was the most common cause of human influenza (flu) in 2009. Some strains of H1N1 are endemic in humans and cause a small fraction of all influenza-like illness and a small fraction of all seasonal influenza. H1N1 strains caused a few percent of all human flu infections in 2004–2005. Other strains of H1N1 are endemic in pigs (swine influenza) and in birds (avian influenza).

In June 2009, the World Health Organization declared the new strain of swine-origin H1N1 as a pandemic. This strain is often called swine flu by the public media. This novel virus spread worldwide and had caused about 17,000 deaths by the start of 2010.

Swine influenza (also called swine flu, hog flu, or pig flu) is an infection by any one of several types of swine influenza virus. Swine influenza virus (SIV) is any strain of the influenza family of viruses that is endemic in pigs. As of 2009, the known SIV strains include influenza C and the subtypes of influenza A known as H1N1, H1N2, H3N1, H3N2, and H2N3.

This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia article "H1N1."
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