COVID-19 Vaccines Portray the Bright Side of Human Creativity, But It Means Nothing until They Prove Their Worth: A Study on Seroconversion after the first Dose of Covishield Vaccine in Central Kerala. - Varghese SM; Sachu A; Jacob L; George G; Chandy GM; Samuel Johnson AK; John GM (Indian journal of community medicine : official publication of Indian Association of Preventive & Social Medicine, 2022)