- PRO/AH/EDR> COVID-19 update (250): caregiver loss, school buses, mRNA vaccines, WHO
Thu, 22 Jul 2021 20:39:34 -0400
COVID-19 -- Worldwide/Unknown
The B.1.617.2 (delta) variant of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes coronavirus disease 2019 (Covid-19), has contributed to a surge in cases in India and has now been detected across the globe, including a notable increase in cases in the United Kingdom. The effectiveness of the BNT162b2 and ChAdOx1 nCoV-19 vaccines against this variant has been unclear.
We used a test-negative case-control design to