Background: Several longitudinal studies have investigated factors associated with
childhood diarrhea in developing countries. However, most studies have neglected�…

Background Although household contacts of patients with tuberculosis are known to be
particularly vulnerable to tuberculosis, the published evidence focused on this group at high�…

Background Studies conducted in transitional communities from Africa and Asia have
pointed to the process of urbanisation as being responsible for the increase in asthma�…

Background Many epidemiologic studies report the odds ratio as a measure of association
for cross-sectional studies with common outcomes. In such cases, the prevalence ratios may�…

Background Factors associated with low birth weight at term (TLBW), a proxy for intrauterine
growth restriction (IUGR), are not well-elucidated in socioeconomically vulnerable�…

To date, no information has been published on the effectiveness of inactivated whole-virus
COVID-19 vaccines plus heterologous booster against symptomatic infection and severe�…

The human genetic diversity of the Americas has been affected by several events of gene
flow that have continued since the colonial era and the Atlantic slave trade. Moreover�…

Background Salvador is the city with the highest number of HTLV-1 infected individuals in
Brazil, yet the main route of HTLV-1 transmission is unknown. Objective To investigate the�…

Background Record linkage is the process of identifying and combining records about the
same individual from two or more different datasets. While there are many open source and�…

Acute gastroenteritis is a major source of morbidity and mortality among young children in
developed and developing countries. Human adenoviruses (HAdVs), and in particular�…