Bakuna na dinidevelop ng Pfizer, 90% umanong epektibo vs. COVID-19

Bakuna na dinidevelop ng Pfizer, 90% umanong epektibo vs. COVID-19

Bakuna na dinidevelop ng Pfizer, 90 umanong epektibo vs.


User: PTVPhilippines

Views: 27

Uploaded: 2020-11-10

Duration: 03:35

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