AstraZeneca

Pfizer Jab Effectiveness "Declines Faster" Than AstraZeneca: Oxford Study

The effectiveness of the Pfizer-BioNTech vaccine against Covid-19 declines faster than that of the AstraZeneca jab, according to a new study published on Thursday. "Two doses of Pfizer-BioNTech have greater initial effectiveness against new COVID-19 infections, but this declines faster compared with two doses of Oxford-AstraZeneca," researchers at Oxford University said.

WHO Says Delta Is Becoming the Dominant Covid Variant Globally

Delta, the highly contagious Covid-19 variant first identified in India, is becoming the dominant strain of the disease worldwide, the World Health Organization’s chief scientist said Friday. That’s because of its “significantly increased transmissibility,” Dr. Soumya Swaminathan, the WHO’s chief scientist, said during a news conference at the agency’s Geneva headquarters.

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