The human race had to deal with epidemics and infectious diseases in the past.
THE BLACK DEATH (1346-1353) Death Toll: 75 – 200 million
CHOLERA PANDEMIC (1852–1860) Death Toll: 1 million
FLU PANDEMIC (1918) Death Toll: 20 -50 million
ASIAN FLU (1956-1958) Death Toll: 2 million