Genetic Characteristics of Rotavirus Acute Gastroenteritis Among Hospitalized Children of Odisha in Eastern India

Subal Kumar Pradhan1, Sumanta Panigrahi2, Pooja Sagar Padhi3

  • 1Department of Pediatrics, Sardar Vallabhbhai Patel Post Graduate Institute of Paediatrics (SVPPGIP) and SCB Medical College, Cuttack, Odisha, India. drsubal@rediffmail.com.

Insights

Rotavirus diarrhea is common in hospitalized children under five, with G3P[8] and G1P[8] genotypes prevalent post-vaccine introduction. Continued surveillance is vital to monitor vaccine impact and evolving rotavirus strains.

Area of Science:

  • Pediatric infectious diseases
  • Virology
  • Vaccinology

Background:

  • Rotavirus is a leading cause of severe diarrheal disease in young children globally.
  • The introduction of rotavirus vaccine into the Universal Immunization Program (UIP) aimed to reduce disease burden.
  • Understanding circulating strains post-vaccination is crucial for assessing vaccine effectiveness and public health strategies.

Purpose of the Study:

  • To determine the epidemiological patterns of rotavirus diarrhea in hospitalized children under five years of age.
  • To identify and characterize the prevalent rotavirus genotypes following the vaccine's introduction in the UIP.
  • To provide data for ongoing rotavirus vaccine surveillance and policy.

Main Methods:

  • A prospective study was conducted from April 2016 to July 2019.
  • Stool samples from hospitalized children under five with acute gastroenteritis were tested for rotavirus using enzyme immunoassay.
  • Rotavirus strains were genotyped using reverse-transcription polymerase chain reaction (PCR); data analyzed with chi-square tests.

Main Results:

  • Rotavirus diarrhea was detected in 36.4% (715/1963) of tested samples.
  • Peak incidence occurred during winter months (December-February) in children aged 6 months to 2 years.
  • The most common genotypes were G3P[8] (50.34%) and G1P[8] (17.46%).

Conclusions:

  • The high prevalence of rotavirus diarrhea underscores the continued importance of rotavirus vaccination.
  • Observed changes in genotype distribution highlight the need for sustained surveillance to monitor vaccine impact on strain evolution.
  • Ongoing monitoring is essential for detecting new rotavirus genotypes and informing future vaccination strategies.
Abstract