Introducing seasonal influenza vaccine in low-income countries: an adverse events following immunization survey in the Lao People's Democratic Republic

Influenza Other Respir Viruses. 2015 Mar;9(2):94-8. doi: 10.1111/irv.12299. Epub 2015 Jan 17.

Abstract

Objective: In 2012, Lao PDR introduced seasonal influenza vaccine in pregnant women, persons aged ≥50 years, persons with chronic diseases, and healthcare personnel. We assessed adverse events following immunization (AEFI).

Methods: We used a multistage randomized cluster sample design to interview vaccine recipients.

Findings: Between April and May 2012, 355,902 were vaccinated. Of 2089 persons interviewed, 261 (12·5%) reported one or more AEFI. The most commonly reported AEFIs were local reactions. No hospitalizations or deaths were reported; 16% sought medical care. Acceptance and awareness of vaccination were high.

Conclusions: Following the introduction of seasonal influenza vaccine in Lao PDR, self-reported adverse events were mild.

Keywords: Adverse events following immunization; Lao PDR; influenza vaccine.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Chronic Disease
  • Female
  • Health Personnel
  • Humans
  • Immunization Programs
  • Influenza Vaccines / adverse effects*
  • Influenza, Human / prevention & control*
  • Laos
  • Male
  • Middle Aged
  • Pregnancy
  • Seasons
  • Self Report
  • Vaccination / adverse effects*

Substances

  • Influenza Vaccines