Category Archives: Influenza

RSV in adults

This study compared morbidity and mortality in adults hospitalized with RSV or influenza and found overall length of stay and mortality were not significantly different between the 2 infections (with 30 day mortality at 9%) (abstract).

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H7N9 cases in China

China has now reported 126 human cases of H7N9 influenza, including 24 deaths. Almost all cases had severe respiratory illnesses requiring hospitalization. No cases have been seen in the US, and the CDC is actively working on a vaccine (CDC … Continue reading

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Influenza spreads wide and small

This study found that hospitalized influenza patients can transmit influenza particles up to 6 feet away, and the particle sizes were smaller than what could be controlled with standard surgical masks. This study calls into question the efficacy of standard … Continue reading

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New influenza in China (H7N9)

The CDC has released an advisory concerning a novel Influenza virus circulating in China, H7N9. So far, the CDC has reported 14 cases and 6 deaths. The transmission is believed to be from poultry and not person-to-person (although the poultry … Continue reading

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Influenza vaccine effectiveness

Early estimates from the CDC have found the 2012-2013 vaccine effectiveness to be only 62% overall (CDC).

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Influenza season started early this year…

To track your area’s incidence, go to (FluView)

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“Egg free” flu vaccine now available

The FDA has approved the first “egg free” flu vaccine, cultured out of mammalian cells, instead of fertilized chicken eggs (FDA site)

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Influenza vaccine efficacy

In this large case-control study, researchers found the overall efficacy of the influenza vaccine for the 2010-2011 season was 60%. It was highest in children age 6mo-8 years (69%) and lowest in elderly>age 65 (38%) (abstract).

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Healthcare workers decline flu vaccinces

According to a survey by the CDC, 86% of physicians and 78% of nurses received a flu vaccine during last flu season. Vaccine rates were 95% among healthcare workers in hospitals that required the vaccine. The most common reasons cited … Continue reading

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H3N2 influenza resurging

The H3N2 influenza swine variant has been confirmed in 16 cases in 3 states in the past month. All cases had prior contact with swine, and there is no evidence of human to human transmission. None were hospitalized or died, … Continue reading

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