The Zika virus appears to have emerged from nowhere, causing widespread health concerns throughout the world after decades of relative silence.
The Zika virus is another wild card dealt to us by nature. It was first discovered in 1947.
Decline in Diarrhea Mortality and Admissions after Routine Childhood Rotavirus Immunization in Brazil: A Time-Series Analysisby Jai K Das
In 2006, Brazil began routine immunization of infants <15 wk of age with a single-strain rotavirus vaccine. The authors in this paper evaluated whether the rotavirus vaccination program was associated with declines in childhood diarrhea deaths and hospital admissions by monitoring disease trends before and after vaccine introduction in all five regions of Brazil with varying disease burden and distinct socioeconomic and health indicators.