Influenza test results and seasonal vaccination status among patients with medically attended acute respiratory illness
(N = 3,254), by selected characteristics -- U.S.
Selected characteristics for enrolled patients with medically attended acute respiratory illness
, by influenza test result and seasonal influenza vaccination status--U.S.
Although two of three vaccine strains were not optimally matched with circulating viruses this season, an interim VE estimate suggests that vaccination provided substantial protection against medically attended acute respiratory illness
in this study population.
During the combined influenza A (H1N1) and B epidemic periods--a 3-year total--the number of medically attended acute respiratory illnesses
(MAARIs) among vaccinated children was significantly less than the number of events among nonvaccinated age-matched controls for each of three age groups: 389 MAARIs in vaccinated children aged 1.5-4 years vs.