WASHINGTON, United States (AFP) — The US said Friday it was purchasing 100 million more doses of the Covid-19 vaccine candidate developed by Moderna, amid reports the government passed on the opportunity to secure more supply of the Pfizer jab. The agreement brings the total number of Moderna doses bought by the US to 200 million, enough to immunize 100 million people with the two-shot regimen. “Securing another 100 million doses from Moderna by June […]