two-thirds of the total casualties.
In earlier times, it was harder to avoid the spread of disease due to poor sanitation, primitive medicine, and lack of basic hygiene
in close living quarters, all of which led to mass devastation. But if
there’s one thing we can take away from learning about the deadliest
epidemics in history, it’s that outbreaks today — like Ebola, Zika,
or different types of influenzas — are much smaller and more contained
than those that occurred in ancient and medieval times, due to improved
emergency response and medical attention, even in developing countries.