Here in the U.S., at least half the adult population is fully vaccinated in 19 states, as local officials search for new ways to increase the lagging rate of vaccinations. In New York, Governor Andrew Cuomo announced residents who got vaccinated at a state-run clinic can receive a lottery ticket with prize money worth up to $5 million. Top White House coronavirus adviser Dr. Anthony Fauci said this week vaccinated people would likely need a COVID-19 booster shot “within a year or so.”