Here’s my cure for the common cold: have every human [family] stay at home for two months.
Every human in the entire world. This would take some massive planning, specially for people who need medical care but I believe it would be possible. Food, water, supplies…
I’m not totally sure of the time frame it would take, but colds are only contagious for a finite amount of time, right? Are people carriers for longer than a certain time? Would the virus reactivate at some point later in time?
What other diseases would stop being spread.. ?