Occurrence of group A rotavirus mixed P genotypes infections in children living in Goiânia-Goiás, Brazil.
Group A rotaviruses (RVA) are the main causing agents of acute gastroenteritis worldwide, having a great impact on childhood mortality in developing countries. The objective of this study was to identify RVA-positive fecal samples with mixed P genotypes by hemi-nested reverse transcriptase-polymerase chain reaction (RT-PCR), followed by sequencing confirmation. Our results showed that, from the 81 RVA-positive samples, 25 were positive for more than one P genotype by hemi-nested RT-PCR. Of these 25 samples, 12 (48%) had their mixed P genotypes confirmed by sequencing and, from these, 10 were identified as P[6]P[8], one as P[4]P[6], and one as P[4]P[6]P[8]. Our results confirm the occurrence of RVA mixed infections among children in Brazil and reinforce the importance of the constant monitoring of RVA circulating strains for the efficacy of control/prevention against these agents.
Laboratório de Virologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, Goiânia, Goias, Brazil. erikaregina2@gmail.com
E R L
ER
Freitas
C M A
CM
Soares
F S
FS
Fiaccadori
M
M
Souza
J A
JA
Parente
P S S
PS
Costa
D D P
DD
Cardoso
D001938:Brazil; D002648:Child; D005243:Feces / Q000821:virology; D005260:Female; D005759:Gastroenteritis / Q000821:virology*; D005838:Genotype; D006801:Humans; D008297:Male; D010802:Phylogeny; D020133:Reverse Transcriptase Polymerase Chain Reaction / Q000379:methods; D012401:Rotavirus / Q000145:classification* / Q000235:genetics* / Q000302:isolation & purification; D012400:Rotavirus Infections / Q000821:virology*; D017422:Sequence Analysis, DNA; D017385:Sequence Homology