The Centers for Disease Control and Prevention is not examining changing the definition of “fully vaccinated,” its director said Wednesday. “The definition of ‘fully vaccinated’ is one dose of the Johnson & Johnson vaccine and two doses of the either Pfizer vaccine or the Moderna vaccine,” Dr. Rochelle Walensky, the director of the agency, or the CDC, told reporters during a virtual briefing. “And we’re not examining changing that definition anytime, at this point,” she added. Walensky was questioned about the definition because federal health officials recently decided to let tens of millions of Americans get booster COVID-19 vaccine shots,...