Johnson & Johnson's one shot Covid vaccine grants lasting response in trial

Johnson & Johnson’s experimental one-shot Covid-19 vaccine generated a long-lasting immune response in an early safety study, providing a glimpse at how it will perform in the real world as the company inches closer to approaching U.S. regulators for clearance.

More than 90% of participants made immune proteins, called neutralizing antibodies, within 29 days after receiving the shot, according to the report, and all participants formed the antibodies within 57 days. The immune response lasted for the full 71 days of the trial.

“Looking at the antibodies, there should be good hope and good reason that the vaccine will work,”