Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Even though BCG is one of the oldest vaccinations around, the effectiveness is highly debated, as high as 80% to sometimes as low as 50-60% or even lower (there have been studies with effectiveness rates as low as 20%). Also when not given at birth the effectiveness decreases even more over time, hence the advice from my HK doctor (and my 2nd HK opinion) not to vaccinate my 4 1/2 yo at the time.
This is an archive of over 20 years of GeoBaby and GeoSchools knowledge and discussions, kept online as a read-only reference.