RESUMO
To evaluate how breakthrough rotavirus disease contributes to transmission, we examined the impact of rotavirus vaccination on fecal shedding and duration of illness. We used multivariable linear regression to analyze rotavirus quantity by RT-qPCR and duration among 184 episodes of rotavirus diarrhea positive by ELISA in the PROVIDE study. Vaccinated children had less fecal viral shedding compared to unvaccinated children (mean difference = -0.59 log copies per gram of stool; 95% confidence interval [CI], -.99 to -.19). Duration of illness was on average 0.47 days (95% CI, -.23 to 1.17 days) shorter among vaccinated children. Rotarix vaccination reduces shedding burden among breakthrough cases of rotavirus gastroenteritis. Clinical Trials Registration . NCT01375647.
Assuntos
Fezes , Infecções por Rotavirus , Vacinas contra Rotavirus , Rotavirus , Vacinas Atenuadas , Eliminação de Partículas Virais , Humanos , Vacinas contra Rotavirus/administração & dosagem , Vacinas contra Rotavirus/imunologia , Infecções por Rotavirus/prevenção & controle , Infecções por Rotavirus/epidemiologia , Infecções por Rotavirus/virologia , Lactente , Bangladesh/epidemiologia , Rotavirus/imunologia , Fezes/virologia , Feminino , Masculino , Vacinas Atenuadas/administração & dosagem , Vacinas Atenuadas/imunologia , Gastroenterite/virologia , Gastroenterite/prevenção & controle , Gastroenterite/epidemiologia , Vacinação , Diarreia/virologia , Diarreia/prevenção & controle , Diarreia/epidemiologia , Administração OralRESUMO
To evaluate how breakthrough rotavirus disease contributes to transmission, we examined the impact of rotavirus vaccination on fecal shedding and duration of illness. We used multivariable linear regression to analyze rotavirus quantity by RT-qPCR and duration among 184 episodes of rotavirus diarrhea positive by ELISA in the PROVIDE study. Vaccinated children had less fecal viral shedding compared to unvaccinated children (mean difference = -0.59 log copies per gram of stool, 95% CI: -0.99, -0.19). Duration of illness was on average 0.47 days (95% CI: -0.23, 1.17) shorter among vaccinated children. Rotarix vaccination reduces shedding burden among breakthrough cases of RVGE.
We estimated the effect of rotavirus vaccination on duration and quantity of rotavirus shed during rotavirus gastroenteritis in Bangladesh. Virus quantity was lower in symptomatic vaccinated children compared to symptomatic unvaccinated children, but differences in episode duration were small.
