World 7 · Vaccines, Outbreaks and Herd Immunity · 14 min · PRO
Kinds of vaccine
And how we know they are safe
PRO · Microbe Zoo
World 7: Vaccines, Outbreaks and Herd Immunity is part of PRO
The first world of Microbe Zoo is free. PRO opens the other 27 lessons in 6 worlds — simulations, quizzes and all.
PRO includes
- All 60 labs — every world, every lesson
- Practice exams and certificates
$8.33/mo, billed yearly ($99.99) · or $39.99 monthly