Endemic coronaviruses
statnews.com/2020/02/04/two…
COVID-19 immunity
wired.com/story/sorry-im…
Malaria immunity
cdc.gov/malaria/malari…
Endemic vs epidemic
science.sciencemag.org/content/357/63…
Swedish policy
thelancet.com/journals/lance…
How diseases were eradicated
annualreviews.org/doi/pdf/10.114…