News & Perspective

Mar 01, 2013

Mar 01, 2013

Study: Getting flu shot 2 years in a row may lower protection

(CIDRAP News) – Experts are puzzled by a new study in which influenza vaccination seemed to provide little or no protection against flu in the 2010-11 season—and in which the only participants who seemed to benefit from the vaccine were those who hadn't been vaccinated the season before.

Feb 21, 2013

Feb 21, 2013

CDC midseason check finds scant flu vaccine effect for seniors

(CIDRAP News) – Influenza vaccine over the past few months has provided moderate protection overall but didn't have a significant impact on protecting seniors, a study from the US Centers for Disease Control and Prevention (CDC) revealed today.

Jan 31, 2013

Jan 31, 2013

Studies: Flu vaccine effectiveness waned over 2011-12 season

(CIDRAP News) – It's been more or less an article of faith that influenza vaccination in the fall will protect a person through the winter flu season, but three studies published today in Eurosurveillance are challenging that view.

Nov 06, 2012

Nov 06, 2012

Canadian call for health worker flu shots stirs debate

(CIDRAP News) – A recent editorial calling for requiring influenza shots in healthcare workers (HCWs) has stirred debate in the pages of the Canadian Medical Association Journal (CMAJ), with two groups of researchers questioning the quality of the evidence that the vaccinations protect patients.

Oct 25, 2011

Oct 25, 2011

Strict meta-analysis raises questions about flu vaccine efficacy

Editor’s Note: This article covers research conducted in part by CIDRAP researchers. Please note that CIDRAP News operates independently in relation to CIDRAP's research and policy programs.

See also: Public health groups say flu vaccine is best tool, despite limitations

Feb 11, 2011

Feb 11, 2011

Study showing high effectiveness for H1N1 vaccine stirs debate

(CIDRAP News) – A recent case-control study estimates that the adjuvanted pandemic H1N1 influenza vaccine used in Canada was effective 93% of the time, a substantially higher figure than seen in several other studies and one that has raised some eyebrows among other flu vaccine researchers.

Nov 15, 2007

Nov 15, 2007

THE PANDEMIC VACCINE PUZZLE Can we vaccinate enough people in time to matter?

Maryn McKennaContributing Writer

(CIDRAP News) – This in-depth article investigates the prospects for development of vaccines to head off the threat of an influenza pandemic posed by the H5N1 avian influenza virus. Its seven parts put advances in vaccine technology in perspective by illuminating the formidable barriers to producing an effective and widely usable vaccine in a short time frame.

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