Factors Predicting Blood Culture Positivity in Children With Enteric Fever.

Background: Blood culture, despite low sensitivity, is the gold standard for enteric fever diagnosis. Understanding predictors of blood culture positivity may help design strategies to optimize enteric fever diagnosis.

Methods: A cohort of 6760 children aged 0.

Why do participants drop-out: findings from a prospective pediatric cohort for fever surveillance established at Vellore, southern India.

Background: Cohort studies are pivotal in understanding the natural history, and to thereby determine the incidence of a disease. The conduct of large-scale community-based cohort studies is challenging with reference to money, manpower and time. Further, attrition inherent to cohort studies can affect the power, and thereby the study's validity.