The risk posed by the delta variant of the coronavirus has federal health officials reevaluating booster shots for the most vulnerable residents. The Food and Drug Administration, according to reports, is expected to fast-track reviews of vaccine data, speeding efforts to authorize an extra dose or booster shot for the millions of immunocompromised Americans.
Recent research shows a booster shot may help prevent variants from emerging and provide better protection for those with certain medical conditions. The urgency is increasing as COVID-19 cases rise sharply. Dr. Martin Blaser, professor of medicine and infectious diseases at Rutgers University, discusses the prospects.
