Know when the effect of the first dose of Covishield starts affecting people above 60 years of age

Colombo: A study conducted by a university in Sri Lanka found that people over the age of 60 who took the first dose of Covishield, the COVID-19 vaccine from Oxford-AstraZeneca, fell within 16 weeks. While on the other hand it showed good impact on the youth population during the same period.

Professor Neelika Malvige, Department of Immunology and Molecular Sciences, Sri Jayawardenepura University, said in a tweet, “Our study suggests that the efficacy of the vaccine dropped at 16 weeks after the first dose in elderly individuals. During this, antibodies also ended in them. However, the vaccine showed a good effect on people below 60 years of age. Antibodies were still present in them even after 16 weeks.” He said that our research on the effect of the first dose of Kovidhield vaccine has been published in NatureComms.

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