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pfizer vaccine Vaccines work by preparing the body’s immune system with a defense against the pathogen. The virus or bacterium is recognized, neutralized, and destroyed, often before it can spread. Our Vaccine Research and Development scientists are working to extend the benefits of vaccines into new areas
các loại vaccine covid Tính đến 3/8, Bộ Y tế đã cấp phép sử dụng 6 loại vaccine phòng Covid-19, gồm AstraZeneca, Sputnik V, Sinopharm, Pfizer, Moderna và JohnsonJohnson. Vaccine AstraZeneca