COVID vaccines protect against Delta, but their effectiveness decreasing

Name: COVID vaccines protect against Delta, but their effectiveness decreasing
Uploaded: 2021-08-25T00:14:54Z
Duration: 19 s
Description: COVID-19 vaccine's effectiveness has dropped to 61 percent about 90 days after a person takes their second dose of AstraZeneca.

COVID-19 vaccine's effectiveness has dropped to 61 percent about 90 days after a person takes their second dose of AstraZeneca.

Posted August 24, 2021 5:14pm PDT