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Infection with group C rotavirus in a suburban community in Brazil
M J Cox1, V L James, R S Azevedo
1Department of Biological Sciences, University of Warwick, Coventry, UK. cox@oikos.warwick.ac.uk
Insights
Group C rotavirus infections are common globally, with antibody prevalence increasing with age. This suggests frequent exposure, indicating more infections than reported illnesses, and independent transmission from Group A rotavirus.
Area of Science:
- Virology
- Epidemiology
- Public Health
Background:
- Group C rotaviruses cause sporadic gastroenteritis outbreaks worldwide.
- Understanding their epidemiological dynamics is crucial for public health interventions.
Purpose of the Study:
- To investigate the age-specific seroprevalence of group C rotavirus antibodies in a Brazilian suburban community.
- To assess potential correlations with group A rotavirus infection patterns.
Main Methods:
- Sera were randomly collected from a representative community sample.
- Antibody prevalence for group C rotavirus was determined across different age groups.
- Data was analyzed for patterns in relation to group A rotavirus antibodies.
Main Results:
- Low antibody prevalence in children under 5, increasing gradually with age.
- 36% seropositivity observed in adults, indicating continuous exposure.
- No clear correlation found between group A and group C rotavirus infection patterns in individuals.
Conclusions:
- Group C rotavirus infection appears more frequent than disease incidence suggests.
- Adult antibody prevalence is comparable to other global regions.
- Group C and A rotaviruses likely exhibit independent transmission, though further research is needed.
Abstract:
Group C rotaviruses are associated with sporadic outbreaks of gastroenteritis worldwide. Age-specific seroprevalence of group C rotavirus antibodies was investigated in sera, randomly collected and representative of a suburban community in Brazil which had previously been screened for group A rotavirus antibodies. Antibody prevalence to group C rotavirus was low in children under 5 years and increased slowly with age to 36% seropositivity in adults, reflecting continuous exposure to primary infection in all age groups. This suggests a higher incidence of infection than disease might predict. Adult antibody prevalence was similar to that in other geographical settings. No obvious patterns of infection with group A and group C rotavirus were found within individuals, which suggests independent transmission. However, further epidemiological studies are required to understand group C rotavirus dynamics and possible interactions with group A rotavirus transmission and immunity.