Patients under immunosuppressive therapy, who do not respond to primary COVID-19 vaccination, have an increased risk for severe COVID-19 disease courses. Until now, it was not clear whether those patients at risk can benefit from an additional booster vaccination.
New research presented this week at ACR Convergence, the American College of Rheumatology's annual meeting, shows immunocompromised patients using rituximab (a drug used to treat diseases like rheumatoid arthritis) were able to produce antibodies against COVID-19 (seroconvert) after receiving a third COVID-19 vaccine dose, even if there was no development of the antibody after the first two doses of the vaccine.