New Mexico Gov. Michelle Lujan Grisham went beyond endorsing a COVID-19 vaccine booster for all adults, saying she believes being fully vaccinated now means a person should have three shots. At a a virtual pandemic briefing, she said the definition of “fully vaccinated” changing to three shots would reflect concerns that COVID-19 vaccines start losing their effectiveness after about six months. Lujan Grisham, who is running for reelection, echoed sentiments she expressed several days ago that all adults in New Mexico should get a booster shot. “We know vaccinations are the most effective tool to both blunting the spread of the virus and to protecting ourself and our families,” she said. “So we are analyzing what we can do to create those incentives—and potentially mandates—for making sure that people are fully vaccinated, which means three vaccines.” She blamed the unvaccinated for the ongoing pandemic but also acknowledged that the vaccinated can also contract …