BREAKING—Oxford/Astrazeneca vaccine is 70% effective overall. But one of its dosing regimens of low-then-high yields 90% effectiveness.

Oxford #COVID19 vaccine cheaper than the Pfizer & Moderna vaccines, and does *not* does not require freezing transport.https://t.co/sHmLvcvonh

— Eric Feigl-Ding (@DrEricDing) November 23, 2020