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
8 Mar 2015 Spotlight: Buffing up Laos’ defence against emerging diseases
ASEAN countries are stepping up their capabilities to guard against cross-border outbreaks of emerging diseases and Singapore has been doing its part to help Laos grow its pool of qualified……