Rotavirus G2P[4] and G2P[4]+[6] infections during norovirus gastroenteritis outbreak: summer season 2010, Brazil

• Main Authors: Adriana Luchs, Simone Guadagnucci Morillo, Cibele Daniel Ribeiro, Audrey Cilli, Samira Julien Calux, Rita de Cássia Compagnoli Carmona, Maria do Carmo Sampaio Tavares Timenetsky
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Medicina Tropical (SBMT) 2013-04-01
• Series: Revista da Sociedade Brasileira de Medicina Tropical
• Subjects: Rotavirus; Summer; Seasonality
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86822013000200227

Introduction This study aimed to monitor the seasonality of rotavirus infection, and gain insight into the variability of Brazilian strains. Methods A total of 28 stool samples were analyzed from 698 revised cases of gastroenteritis during a norovirus outbreak in the summer of 2010 in Guarujá, Brazil. Diagnosis was performed using enzyme-linked immunosorbent assay (ELISA), reverse transcription polymerase chain reaction (RT-PCR), and sequencing. Results Rotavirus infection was detected in 17.9% (5/28) of samples; 4 samples were G2P[4] genotype, and one G2P[4]+P[6] genotype. G2 and P[4] sequences showed a genetic relationship to strains from India and Russia, respectively. Conclusions The seasonal pattern of rotavirus may be a consequence of human activity apart from climate factors.