Surgical mask to prevent influenza transmission in households: a cluster randomized trial.

ABSTRACT:

Background

Facemasks and respirators have been stockpiled during pandemic preparedness. However, data on their effectiveness for limiting transmission are scarce. We evaluated the effectiveness of facemask use by index cases for limiting influenza transmission by large droplets produced during coughing in households.

Methodology and principal findings

A cluster randomized intervention trial was conducted in France during the 2008-2009 influenza season. Households were recruited during a medical visit of a household member with a positive rapid influenza A test and symptoms lasting less than 48 hours. Households were randomized either to the mask or control group for 7 days. In the intervention arm, the index case had to wear a surgical mask from the medical visit and for a p

SUBMITTER: Canini L 

PROVIDER: S-EPMC2984432 | biostudies-literature | 2010 Nov

REPOSITORIES: biostudies-literature