Those who had COVID-19 may only need one vaccine dose, study suggests

Those recovered from COVID-19 had a robust antibody response after the first mRNA vaccine dose, but little immune benefit after the second dose, according to new research. The findings suggest only a single vaccine dose may be needed to produce a sufficient antibody response. Those who did not have COVID-19 did not have a full immune response until after receiving their second vaccine, reinforcing the importance of the two recommended doses.