During the 2017‒2018 influenza season in the US, influenza vaccination reduced the risk of medically-attended influenza by 38%, a recent study found. Researchers used national age-specific estimates of 2017‒2018 influenza vaccine coverage and disease burden to estimated vaccine effectiveness (VE). They found:
- The VE against outpatient medically-attended, laboratory-confirmed influenza was 38%.
- Influenza vaccination was estimated as preventing 7.1 million illnesses, 3.7 million medical visits, 109,000 hospitalizations, and 8,000 deaths.
- Vaccination prevented 10% of expected hospitalizations overall and 41% among children aged 6 months to 4 years.
Rolfes MA, Flannery B, Chung J, et al. Effects of influenza vaccination in the United States during the 2017–2018 influenza season. [Published online ahead of print February 2, 2019]. Clin Infect Dis. doi:10.1093/cid/ciz075.
This Week's Must Reads
Must Reads in Influenza
Influenza Vaccination Effectiveness in the US, Clin Infect Dis; ePub 2019 Feb 2; Rolfes, et al
Influenza Associated Outcomes in Pregnancy, J Infect Dis; ePub 2019 Jan 23; Prasad, et al
Influenza Effects in Patients with Heart Failure, JACC Heart Fail; ePub 2019 Jan 2; Panhwar, et al
IDSA Updates Seasonal Influenza Guidelines, Clin Infect Dis; ePub 2018 Dec 19; Uyeki, et al