Can Vaccination and Infection Rates Add Up to Reach Covid Herd Immunity?
It’s been a long, dark winter of covid concerns, stoked by high post-holiday case counts and the American death tally exceeding 530,000 lives lost. But with three vaccines — Pfizer-BioNTech, Moderna and Johnson & Johnson — now authorized for emergency use in the United States, there seems to be hope that the pandemic’s end may […]