Population based hospitalization burden of laboratory-confirmed hand, foot and mouth disease caused by multiple enterovirus serotypes in Southern China

PLoS One. 2018 Dec 13;13(12):e0203792. doi: 10.1371/journal.pone.0203792. eCollection 2018.

Abstract

Background: Hand, foot and mouth disease (HFMD) is spread widely across Asia, and the hospitalization burden is currently not well understood. Here, we estimated serotype-specific and age-specific hospitalization rates of HFMD in Southern China.

Methods: We enrolled pediatric HFMD patients admitted to 3/3 county-level hospitals, and 3/23 township-level hospitals in Anhua county, Hunan (CN). Samples were collected to identify enterovirus serotypes by RT-PCRs between October 2013 and September 2016. Information on other eligible, but un-enrolled, patients were retrospectively collected from the same six hospitals. Monthly numbers of all-cause hospitalizations were collected from each of the 23 township-level hospitals to extrapolate hospitalizations associated with HFMD among these.

Results: During the three years, an estimated 3,236 pediatric patients were hospitalized with lab-confirmed HFMD, and among these only one case was severe. The mean hospitalization rate was 660 (95% CI: 638-684) per 100,000 person-years for lab-confirmed HFMD, with higher rates among CV-A16 and CV-A6 associated HFMD (213 vs 209 per 100,000 person-years), and lower among EV-A71, CV-A10 and other enterovirus associated HFMD (134, 39 and 66 per 100,000 person-years respectively, p<0.001). Children aged 12-23 months had the highest hospitalization rates (3,594/100,000 person-years), followed by those aged 24-35 months (1,828/100,000 person-years) and 6-11 months (1,572/100,000 person-years). Compared with other serotypes, CV-A6-associated hospitalizations were evident at younger ages.

Conclusions: Our study indicates a substantial hospitalization burden associated with non-severe HFMD in a rural county in southern China. Future mitigation policies should take into account the disease burden identified, and optimize interventions for HFMD.

Publication types

  • Clinical Trial
  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Age Factors
  • Child
  • Child, Preschool
  • China / epidemiology
  • Clinical Laboratory Techniques
  • Cost of Illness*
  • Enterovirus B, Human*
  • Hand, Foot and Mouth Disease* / diagnosis
  • Hand, Foot and Mouth Disease* / epidemiology
  • Hand, Foot and Mouth Disease* / therapy
  • Hand, Foot and Mouth Disease* / virology
  • Hospitalization*
  • Humans
  • Male
  • Retrospective Studies

Grants and funding

This work was supported by grants from the National Science Fund for Distinguished Young Scholars (no. 81525023 to Hongjie Yu), the National Natural Science Foundation of China (no. 81473031 to Hongjie Yu), the Li Ka Shing Oxford Global Health Programme (no. B9RST00-B900.57 to Hongjie Yu), TOTAL foundation (no. 2015–099 to Hongjie Yu), and Chinese Preventive Medicine Association (no. 20101801 to Lidong Gao). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.