COVID-19 vaccine is 90 percent effective: Pfizer and BioNTech

COVID-19 vaccine is 90 percent effective: Pfizer and BioNTech

COVID-19 vaccine is 90 percent effective: Pfizer and BioNTech

Announcement is a major victory in the fight against a pandemic that has killed more than a million people.

User: Al Jazeera English

Views: 42

Uploaded: 2020-11-10

Duration: 02:41