Group A rotaviruses are a major cause of acute gastroenteritis in children. Almost all children are infected by the age of 5 years old. Rotavirus disease causes around 600,000 deaths per year. VP4 (P) and VP7 (G) genotypes were analyzed for prevalence and potential antigenicity, as they are known to elicit a neutralizing antibody response during infection. This study predicted the effectiveness of two recently licensed rotavirus vaccines based on Canadian surveillance.
271 out of 348 diarrhea samples from 8 paediatric hospital were successfully genotyped by PCR. Canadian rotavirus genotypes were found to be mostly G1P[8] followed by G3P[8], G2P[4], G9P[8], G4P[8], and G9P[4], between 2007 and 2010.
Reassortment and motif analysis was done with a subset of rotavirus-positive samples. There were no unusual reassortment events found in Canadian strains. Variations amongst strains were commonly genotype-specific, but otherwise rare. In conclusion, rotavirus vaccine escape is presently unlikely amongst Canadian strains.
| Identifer | oai:union.ndltd.org:MANITOBA/oai:mspace.lib.umanitoba.ca:1993/8581 |
| Date | 28 August 2012 |
| Creators | McDermid, Andrew |
| Contributors | Booth, Tim (Medical Microbiology), Embree, Joanne (Medical Microbiology) Coombs, Kevin (Medical Microbiology) Crockett, Maryanne (Medical Microbiology) Bhullar, Raj (Oral Biology) |
| Source Sets | University of Manitoba Canada |
| Detected Language | English |
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