A booster dose of the Johnson & Johnson vaccine produced an increased antibody response in adults from age 18 to 55, newly released data shows.
released data showing that a booster dose to its one-shot coronavirus vaccine provides a strong immune response months after people receive a first dose.
“A booster dose of the Johnson & Johnson COVID-19 vaccine further increases antibody responses among study participants who had previously received our vaccine,” said Dr. Mathai Mammen, global head of research and development at J&J. The company previously published data showing its one-shot dose provided protection for up to eight months after immunization.A syringe of the single-dose Johnson and Johnson vaccine is prepared.
J&J’s vaccine is approved for use in the U.S., across Europe and there are plans for at least 200 million doses to be shared with the U.N.-backed COVAX effort aimed at distributing vaccines to poor countries. But the company has been plagued by production problems and millions of doses made at a troubled factory in Baltimore had to be thrown out.