RT @HelenBranswell: 1. Turning this into a brief thread. The prelim analysis — 90% efficacy — from the Pfizer #covid19 vaccine is very enco… 0 atbildes
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Ernests Štāls - mastodon.social/@ernests (2020-11-09 15:13:45) |
RT @HelenBranswell: 1. Turning this into a brief thread. The prelim analysis — 90% efficacy — from the Pfizer #covid19 vaccine is very enco… | |