How does herd immunity work? [CBC News Explainer]
CBC’ Manitoba’s Teghan Beaudette explains how herd immunity works and prevents outbreaks of infectious diseases. To read more: http://cbc.ca/1.3975920 … source
Liberty Over Safety Is The Texas Anti-Vaxxer Way (HBO)
Baseless claims about a link between vaccines and developmental disorders have fueled the so called “anti-vaxxer” movement for years now. But in Texas, the anti-vaxxers are motivated by… source