Johnson & Johnson : Booster shots increases antibodies
Johnson & Johnson says a booster shot of its COVID-19 vaccine appears to produce “a rapid and robust” increase in antibodies needed to fight the coronavirus.
The drugmaker says researchers saw an increase in antibodies nine-fold higher than levels seen about a month after the first dose of the vaccination was administered. The company cited early results from studies looking at people who received the booster after getting an initial dose of J&J’s single-shot vaccine.
The company said it was working with federal officials, including the FDA and Centers for Disease Control and Prevention, on next steps to enhance the effects of the vaccine and ready a possible booster shot.
One study by a team from New York University found a “significant fraction” of blood samples from recipients who got the J&J shot had low neutralizing antibodies against Delta and several other coronavirus variants.