Outbreaks

Covid-19 vaccination delays could bring more virus variants and hinder efforts to end pandemic

Canada’s Covid Vaccine Failure – WSJ

Visa looks at the possibility beyond the checkout – and estimates it’s worth $ 185 trillion

Only 50 people are known to have contracted COVID-19 more than once – but new strains have medical experts on the alert

Covid-19 mask mandates are ending in some states, increasing tensions

Covid-19 spread in China before the first confirmed cases, new evidence suggests

A single dose of Pfizer vaccine is 85% effective, Israeli research shows

In April we have immunity to the herd

Behind America’s Failed Vaccination Rollout: Fragmented Communication, Misallocated Supply

These doctors want to choose their Covid-19 vaccine, for fear of reactions, lower efficacy