Thursday, March 11, 2010
Herd Immunity in Influenza
Mark Loeb and colleagues have produced another fine study. They report in JAMA the results of a cluster-randomized trial where they vaccinated children aged 3-15 in 49 small communities in rural Canada. Children were vaccinated with either inactivated trivalent influenza vaccine or hepatitis A vaccine as a control. Confirmed influenza (RT-PCR) was 61% lower in non-recipients in the communities where children were vaccinated (3.1%) compared to non-recipients in unvaccinated communities (7.6%). Their main conclusion was that "a significant herd immunity effect can be achieved when the uptake of vaccine is approximately 80% in clusters in which children and adolescents aged 3 to 15 years are immunized." One note: this study was completed during the 2008-2009 season.
Subscribe to:
Post Comments (Atom)
OSHA! OSHA! OSHA!
In many parts of the country, as rates of COVID-19 are declining and vaccination coverage is increasing (albeit with substantial variati...
-
In many parts of the country, as rates of COVID-19 are declining and vaccination coverage is increasing (albeit with substantial variati... -
This is a guest post by Jorge Salinas, MD, Hospital Epidemiologist at the University of Iowa Hospitals & Clinics. There is virtually no...
-
I’m surprised that we can’t stop arguing about the modes of SARS-CoV-2 transmission, despite the fact that most experts (including our frie...
No comments:
Post a Comment
Thanks for submitting your comment to the Controversies blog. To reduce spam, all comments will be reviewed by the blog moderator prior to publishing. However, all legitimate comments will be published, whether they agree with or oppose the content of the post.