Days after White House COVID-19 adviser Anthony Fauci said that the federal government is mulling the definitions around what it means to be “fully vaccinated.” “We’re using the terminology now ‘keeping your vaccinations up to date,’ rather than what ‘fully vaccinated’ means,” Fauci said during a National Institutes of Health-hosted commentary. “Right now, optimal protection is with a third shot of an mRNA or a second shot of a J&J,” he said, referring to the Johnson & Johnson vaccine as well as the Pfizer and Moderna shots, which use mRNA technology. Fauci, who is perhaps the federal government’s lead COVID-19 messenger, made his response about the latest terminology regarding the Israeli government’s plans to administer a fourth Pfizer shot. “We need to find out what the durability of protection of the third shot is before we start thinking about the fourth shot,” Fauci also said. In Israel and several other countries, …