Simple. They have a natural immunity or are in the right place at the right time.
No
There was no medicine that helped them survive. They were less vulnerable because they had been exposed to more endemic diseases.
Licking someone's foot is not recommended. One could catch a number of viral and bacterial infections although no serious STD type diseases can be contracted this way.
not many people with diseases in the camps survived for very long.
No, they'd die pretty quick.
The slave could work and get payed and buy there self out. The slave could work normally and live. The slave could escape to Canada and live.
It can hurt it and your lungs can turn black
It depends upon the illness of the human. Humans have great survival instinct and this cause them to survive for thousands of generation. However some illnesses and diseases also could threatened humans good health, eh.
Could chameleons survive in the ocean why or why not???
There are many different diseases that could be spread through sharing cups. These diseases could include blood and oral diseases.
Colds, sore throats, and Ghastfermfrost are diseases that can survive.
Cattle from the East could not survive on the tough prairie grasses, but the could easily survive the harsh climate of the plains.