Homes and hospitals are where diseases spread the most. One of the primary reasons flu season is in the winter is because the cold drives everyone inside their homes. People still need to go out for supplies such as food too, and, with so many stores closed, the centralized locations help disease spread.

Now that I've covered both inductive and deductive reasoning, you can answer my question. Those measures didn't stop the Peking Pertussis, so why would you assume they stopped other diseases? I don't have a good theory of mind for complete fucking retards, so your answer will be very illuminating.