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Detection and Genogrouping of Noroviruses from Children's Stools By Taqman One-step RT-PCR
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Rotavirus gastroenteritis in children in 4 regions in Brazil: a hospital-based surveillance study

Veridiana Munford1, Alfredo Elias Gilio, Eloisa Correa de Souza

  • 1Virology Laboratories, Department of Microbiology, Institute of Biomedical Sciences, MSD Brazil.

The Journal of Infectious Diseases
|October 13, 2009
PubMed

Insights

Rotavirus genotype surveillance in Brazil revealed regional variations in G and P types, with G2P[4] and G9P[8] being most common. Continuous monitoring is crucial for effective vaccination strategies against this childhood gastroenteritis cause.

Area of Science:

  • Virology
  • Public Health
  • Epidemiology

Background:

  • Rotavirus is a leading cause of severe gastroenteritis in children globally.
  • Understanding rotavirus genotypes is critical for developing and implementing effective vaccination strategies.

Purpose of the Study:

  • To investigate the prevalence and distribution of rotavirus genotypes in different regions of Brazil.
  • To inform public health initiatives and vaccination programs.

Main Methods:

  • Rotavirus surveillance was conducted in four Brazilian cities between 2005 and 2006.
  • Stool samples from children under five with diarrhea were tested for rotavirus using Enzyme Immunoassay.
  • Positive samples were genotyped for G and P types using reverse-transcriptase polymerase chain reaction.

Main Results:

  • A total of 510 stool samples were collected, with 221 (43.3%) testing positive for rotavirus.
  • The predominant G types were G9, G2, and G1; P[4] and P[8] were the most common P types.
  • The most frequent G/P genotype combinations were G2P[4], G9P[8], G9P[4], and G1P[8], with regional variations observed.

Conclusions:

  • Rotavirus prevalence and genotype distribution varied significantly across different regions in Brazil.
  • Ongoing surveillance of rotavirus types is essential for identifying emerging strains and adapting immunization programs.
Abstract

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