Dr. Robert Gallo Co-Founder and Director of the Institute of Human Virology at the Unv. of Maryland School of Medicine and co-founder of the Global Virus Network suggest using Sabin Oral Polio Vaccine{O.P.V}as a stopgap against COVID Asymptomatic and the general population which is a promising approach that involves stimulating the body's own innate immune system. The Sabin oral Polio Vaccine is safe, available, inexpensive, and a powerful stimulant against a range of other viruses beyond Polio.
O.P.V. is not a permanent fix to COVID 19 but Preliminary research from many investigators suggests that it will be effective for a long enough to minimize the risk of people being infected for months when they return to work and immunity could be sustained by periodic booster doses until a more permanent vaccine is developed and available.
Check it out and his work!