- Two doses of Pfizer and AstraZeneca coronavirus vaccines effective against delta variant, study says https://www.washingtonpost.com/world/2021/07/22/coronavirus-latest-updates/ 71 comments science
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- Effectiveness of Covid-19 Vaccines against the B.1.617.2 (Delta) Variant | NEJM https://www.nejm.org/doi/full/10.1056/NEJMoa2108891 50 comments
- China rejects WHO push for more investigation into coronavirus origins in Wuhan - The Washington Post https://www.washingtonpost.com/world/2021/07/22/china-covid-who-wuhan/ 11 comments
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