This is a great article, Beyond the Booster Shot from the New Yorker. It discusses evidence that several vaccines, especially live vaccines like BCG, oral polio, and Measles/Mumps/Rubella can provide a boost to the innate immune system to protect against novel viruses like Covid.
It talks about the possibility of rolling out OPV in the event of a pandemic, or an annual MMR as a general immune booster. Fascinating stuff.
It’s long, but worth the read.
