Rapid declines in age group-specific rotavirus infection and acute gastroenteritis among vaccinated and unvaccinated individuals within 1 year of rotavirus vaccine introduction in England and Wales

Christina J. Atchison, Julia Stowe, Nicholas Andrews, Sarah Collins, David J. Allen, Sameena Nawaz, David Brown, Mary Ramsay, Shamez Ladhani

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57 Citations (Scopus)

Abstract

Background. The oral infant rotavirus vaccine, Rotarix, was introduced in England and Wales in July 2013. We estimated the impact on laboratory-confirmed rotavirus infections and hospitalizations for all-cause acute gastroenteritis (AGE) during the first year after introduction. Methods. We extracted data on laboratory-confirmed rotavirus infections (July 2000 through June 2015) and all-cause AGE-associated hospitalizations (July 2007 through June 2014) for all age groups using national databases (LabBase2 and HES). We determined the ratio of the rate during the 2013-2014 rotavirus season to the rate during the prevaccination era. Results. In infants, there was a 77% decline (rate ratio [RR], 0.23; 95% confidence interval [CI],. 16-.32) in laboratory-confirmed rotavirus infections and a 26% decline (RR, 0.74; 95% CI,. 65-.84) in all-cause AGE-associated hospitalizations in 2013-2014, compared with the prevaccination era. Large reductions were also observed in older children, adults, and older adults. We estimated that 10 884 laboratory-confirmed infections and 50 427 all-cause AGE-associated hospital admissions were averted in 2013-2014. Similar reductions have been observed for laboratory-confirmed rotavirus infections during the 2014-2015 season. Conclusions. The rapid declines in rotavirus infection and AGE in vaccinated and unvaccinated age groups within 1 year of introducing an infant rotavirus vaccination program are far greater than expected and than previously reported by other countries.

Original languageEnglish
Pages (from-to)243-249
Number of pages7
JournalJournal of Infectious Diseases
Volume213
Issue number2
DOIs
Publication statusPublished - 15 Jan 2016

Keywords

  • diarrhea
  • gastroenteritis
  • immunization
  • rotavirus
  • vaccination

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