Today-Dec 15

People in Singapore who received two doses of the Sinovac vaccine have been observed to have lower protection against severe disease when infected by the Delta coronavirus strain, compared to those who were fully vaccinated with the messenger ribonucleic acid (mRNA) vaccines from Pfizer-BioNTech and Moderna. This was based on a recent study conducted here by the National Centre for Infectious Diseases (NCID) and the Covid-19 data management and analytics team of the Ministry of Health (MOH). “The analysis accounted for differences in age, gender, race, housing type and the daily differences in infection rate,” they said. Based on the analysis, the effectiveness of two doses of the Sinovac vaccine was 60 per cent against severe disease. This is lower than that for the Pfizer-BioNTech vaccine, which was 90 per cent, and for the Moderna vaccine, which was 97 per cent. People who have received two doses of the Sinovac vaccine are recommended to receive a dose of an mRNA vaccine as their third dose as part of their primary vaccination series. Read more at: https://www.todayonline.com/singapore/study-spore-population-finds-pfizer-moderna-vaccines-offer-better-protection-against-covid-19-compared-sinovac-1771926