Rotavirus genotypes and the indigenous children of Brazilian midwest in the vaccine era, 2008-2012: footprints of animal genome
J. med. virol
;
87(11): 1881-1889, 2015.
Article
in English
| SES-SP, LILACS, SESSP-IALPROD, SES-SP, SESSP-IALACERVO
| ID: biblio-1022299
ABSTRACT
World group A rotavirus (RVA) surveillance data provides useful estimates of the disease burden, however, indigenous population might require special consideration. The aim of this study was to describe the results of G and Ptypes from Brazilian native children ≤3 years. Furthermore, selected strains have been analyzed for the VP7, VP6, VP4, and NSP4 encoding genes in order to gain insight into genetic variability of Brazilian strains. A total of 149 samples, collected during 20082012, were tested for RVA using ELISA and PAGE, following by RTPCR and sequencing. RVA infection was detected in 8.7% of samples (13/149). Genotype G2P[4] was detected in 2008 and 2010, G8P[6] in 2009, and G3P[8] in 2011. The phylogenetic analysis of the VP7 and VP4 genes grouped the Brazilian G2P[4] and G3P[8] strains within the lineages currently circulating in humans worldwide. However, the phylogenetic analysis of the VP6 and NSP4 from the Brazilian G2P[4] strains, and the VP7 and NSP4 from the Brazilian G3P[8] strains suggest a distant common ancestor with different animal strains (bovine, caprine, and porcine). The epidemiological and genetic information obtained in the present study is expected to provide an updated understanding of RVA genotypes circulating in the native infant population, and to formulate policies for the use of RVA vaccines in indigenous Brazilian people. Moreover, these results highlight the great diversity of human RVA strains circulating in Brazil, and an indepth surveillance of human and animal RVA will lead to a better understanding of the complex dynamics of RVA evolution
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Phylogeny
/
Rotavirus Infections
/
Genetic Variation
/
Viral Proteins
/
Brazil
/
Humans
/
Enzyme-Linked Immunosorbent Assay
/
Molecular Sequence Data
/
Child, Preschool
/
Polymerase Chain Reaction
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
J. med. virol
Year:
2015
Type:
Article
Institution/Affiliation country:
Secretaria da Saúde do Estado de São Paulo/BR
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