Human Growth and Development / Unit 5 HGD 0611 short lesson, about 20 seconds
Vaccination
Captions available
The idea
High vaccination coverage has nearly eliminated polio and measles in many countries, and there is no evidence that vaccines overburden the immune system.
In practice
Global immunisation of children under five slipping from eighty-six percent in two thousand to eighty-three in twenty twenty-three.
Where people slip
Case counts of vaccine-preventable diseases change year by year, so any figure must be dated to its source.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
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