>> And as another commenter pointed out, this is often in countries not used to such scale of health disasters, as they have healthcare and good sanitation.
Polio.
"On Saturday, June 17, 1916, an official announcement of the existence of an epidemic polio infection was made in Brooklyn, New York. That year, there were over 27,000 cases and more than 6,000 deaths due to polio in the United States, with over 2,000 deaths in New York City alone.[15] The names and addresses of individuals with confirmed polio cases were published daily in the press, their houses were identified with placards, and their families were quarantined."
Measles too. These are diseases that hit the western world, the rich countries, killed thousands, in living memory. They causes panic. They caused quarantines. They caused social change. Polio lead directly to the disability rights movement. Wheelchair ramps as mandatory in all buildings: that's from polio.
Polio.
"On Saturday, June 17, 1916, an official announcement of the existence of an epidemic polio infection was made in Brooklyn, New York. That year, there were over 27,000 cases and more than 6,000 deaths due to polio in the United States, with over 2,000 deaths in New York City alone.[15] The names and addresses of individuals with confirmed polio cases were published daily in the press, their houses were identified with placards, and their families were quarantined."
https://en.wikipedia.org/wiki/History_of_polio
Measles too. These are diseases that hit the western world, the rich countries, killed thousands, in living memory. They causes panic. They caused quarantines. They caused social change. Polio lead directly to the disability rights movement. Wheelchair ramps as mandatory in all buildings: that's from polio.