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.

Delta COVID-19 Infection: New Symptoms to Watch out for

As the delta COVID-19 variant, first identified in India, rapidly spreads across the world, becoming the dominant strain in several countries, an expert says there are new symptoms to look for. Physician and volunteer teacher at the US University of Oklahoma Dr. George Monks took to Twitter to let people know that he noticed some differences in the symptoms of delta COVID-19 infections.