COVID-19 vaccine unlikely to be a silver bullet
Experts rein in expectations; long process ahead
By 
FOR MONTHS, a quarantine-weary, virus-ridden nation has been waiting for a COVID-19 vaccine. It’s become the endgame, the antidote to all the death and economic destruction the virus has caused. Massachusetts’s final reopening stage, referred to as the “new normal,” is predicated on having an effective treatment or vaccine. But experts are beginning to rein(...)