Open Access Highly Accessed Open Badges Research article

Entry screening to delay local transmission of 2009 pandemic influenza A (H1N1)

Benjamin J Cowling*, Lincoln LH Lau, Peng Wu, Helen WC Wong, Vicky J Fang, Steven Riley and Hiroshi Nishiura

BMC Infectious Diseases 2010, 10:82  doi:10.1186/1471-2334-10-82

PubMed Commons is an experimental system of commenting on PubMed abstracts, introduced in October 2013. Comments are displayed on the abstract page, but during the initial closed pilot, only registered users can read or post comments. Any researcher who is listed as an author of an article indexed by PubMed is entitled to participate in the pilot. If you would like to participate and need an invitation, please email, giving the PubMed ID of an article on which you are an author. For more information, see the PubMed Commons FAQ.

So there's no evidence of benefit, then?

Peter English   (2010-08-05 12:52)  Personal comments - not those of my employer email

The conclusion starts "In conclusion, our results suggest that entry screening could delay local transmission for an additional 1-2 weeks" (and in the abstract "Entry screening may lead to short-term delays in local transmission of a novel strain of influenza virus"). Yet the results section states that the 95% confidence interval includes zero, and the discussion starts "Our results suggest that entry screening did not lead to substantial delays in local H1N1 transmission".

I take home the message: there is no evidence that entry screening delays the transmission of H1N1 in a country. This could be because it doesn't; or it could be because studies designed to look for such evidence have been under-powered to detect it.

Competing interests



Post a comment