Health experts discuss people 'not wanting' Johnson & Johnson vaccine due to lower efficacy Doctors say that any vaccine is a good choice and last updated 2021-02-25 20:24:34-05 GRAND RAPIDS, Mich. â With the Johnson & Johnson COVID-19 vaccine likely on the verge of approval from the FDA Friday, health experts are excited for a third option. With a lower efficacy rate however, some are worried people wonât want that version of the vaccine, but the Kent County Health Department said that any COVID vaccine is a great one. âI think that itâs just important to get a vaccine in your arm, no matter what type it is,â said Mary Wisinski, registered nurse and KCHD immunization program supervisor.