Q. What about if my child already had Covid? Should I still get them vaccinated? Yes. Even though prior Covid infection does offer some natural immunity to prevent future infections, we still don’t know how long that lasts. “Per CDC recommendations, getting vaccinated adds protection,” says Suellen Hopfer, PhD, CGC, an assistant professor in the department of health, society and behavior, and the department of pediatrics at University of California, Irvine.