public health

2 articles · All tags

• The Black Death: How the Plague Changed Medieval Europe
  The Black Death killed an estimated third to half of Europe between 1347 and 1351. Learn its cause, how it spread, and how it reshaped society and medicine.
• How Vaccines Work
  The immunology of vaccination: how presenting a harmless antigen trains adaptive immunity, what memory cells do, and why herd immunity protects the unvaccinated.