Availability of affordable, efficacious vaccines holds promise but challenges policy makers to assess critically the burden of disease and the anticipated impact in the local conditions. We review the mortality, morbidity and economic burden of rotavirus diarrhea in India in the context of improving child survival and health access, and present estimates of morbidity associated with rotavirus diarrhea from the follow up of five observational cohorts that were offered access to healthcare without fees. This, we drug discovery believe, represents morbidity not confounded by financial and access to care-related
issues and therefore a more accurate measurement of the underlying burden of disease. We combined data from the Indian Rotavirus Strain Surveillance Network (IRSSN), the Million Death Study (MDS) [13] and statistics compiled by the World Health Organization (WHO) and UNICEF with data from five community-based cohorts to arrive at conservative estimates of the burden of rotavirus diarrhea across the disease spectrum and the economic costs related to the disease. The IRSSN is a geographically representative, hospital based diarrheal surveillance system that used standardized protocols for enrolment and diagnostic evaluation at eight sites across India during 2005–2009 [12]. This surveillance system sampled diarrheal hospitalization in the sentinel hospitals and provides the proportion of hospitalized diarrhea that was related to rotavirus.
The Million Death Study (MDS), being conducted between 1998 and 2014 by the Registrar General of India and collaborators to determine causes of death in India
Afatinib concentration derives its data from a nationally representative sample of 14 million people in 2.4 million households within the Sample Registration those System, a large, routine demographic survey performed by the Registrar General of India. All deaths in the surveyed families have a cause of death assigned according to the International Classification of Diseases Revision 10 and are characterized by age, gender and region [13]. Incidence of diarrhea, diarrheal outpatient visits and hospitalization was obtained from five community-based cohorts that were intensively followed up for enteric diseases till at least two years of age. Three of these cohorts were in Vellore while the fourth was located in an urban slum in Delhi. Four of these cohorts also involved rotavirus testing of diarrheal samples, while a fifth cohort (also based in Vellore) had fortnightly follow-up and healthcare access data but not rotavirus testing of diarrheal samples. The details of the five cohorts are presented in Table 1. The overall rates of gastroenteritis, outpatient visits and hospitalizations due to rotavirus in the first two years of life were obtained as a weighted average from the cohorts. The 95% confidence intervals (95% CI) were calculated using the Byar’s approximation of the exact interval for the Poisson distribution [17].