Could lower vaccine doses be key to ending the COVID pandemic?

Fractional or lower dosing has been used around the world for years as a means to overcome vaccine shortages.

During an outbreak of Yellow Fever in Brazil in 2018, there was a global shortage of vaccines. In the face of those limitations and the virus’s rapid spread, health officials in Brazil decided to administer fractional dosing. They gave people one-fifth of the normal dose. More people got protection in less time and the outbreak was contained.