Annual changes in rotavirus hospitalization rates before and after rotavirus vaccine implementation in the United States
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Annual changes in rotavirus hospitalization rates before and after rotavirus vaccine implementation in the United States

Filetype[PDF-3.98 MB]


  • English
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    Details:

    • Alternative Title:
      PLoS One
    • Publisher's site:
      http://dx.doi.org/10.1371/journal.pone.0191429
    • Personal Author:
    • Description:
      Background

      Hospitalizations for rotavirus and acute gastroenteritis (AGE) have declined in the US with rotavirus vaccination, though biennial peaks in incidence in children aged less than 5 years occur. This pattern may be explained by lower rotavirus vaccination coverage in US children (59% to 73% from 2010–2015), resulting in accumulation of susceptible children over two successive birth cohorts.

      Methods

      Retrospective cohort analysis of claims data of commercially insured US children aged <5 years. Age-stratified hospitalization rates for rotavirus and for AGE from the 2002–2015 rotavirus seasons were examined. Median age and rotavirus vaccination coverage for biennial rotavirus seasons during pre-vaccine (2002–2005), early post-vaccine (2008–2011) and late post-vaccine (2012–2015) years.

      Results

      Age-stratified hospitalization rates decreased from pre-vaccine to early post-vaccine and then to late post-vaccine years. The clearest biennial pattern in hospitalization rates is the early post-vaccine period, with higher rates in 2009 and 2011 than in 2008 and 2010. The pattern diminishes in the late post-vaccine period. For rotavirus hospitalizations, the median age and the difference in age between biennial seasons was highest during the early post-vaccine period; these differences were not observed for AGE hospitalizations. There was no significant difference in vaccination coverage between biennial seasons.

      Conclusions

      These observations provide conflicting evidence that incomplete vaccine coverage drove the biennial pattern in rotavirus hospitalizations that has emerged with rotavirus vaccination in the US. As this pattern is diminishing with higher vaccine coverage in recent years, further increases in vaccine coverage may reach a threshold that eliminates peak seasons in hospitalizations.

    • Subject:
    • Source:
      PLoS One. 13(2).
    • Pubmed ID:
      29444124
    • Pubmed Central ID:
      PMC5812572
    • Document Type:
      Journal Article
    • Place as Subject:
      United States
    • Collection(s):
      CDC Public Access
    • Main Document Checksum:
    • File Type:

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