Pfizer COVID Jab Declines Faster Than AstraZeneca: Study
LONDON,ย United Kingdomย (AFP) โ The effectiveness of the Pfizer-BioNTechย vaccineย 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 […]