Effectiveness of the ChAdOx1 nCoV-19 Coronavirus Vaccine (Covishield^TM) in Preventing SARS-CoV2 Infection, Chennai, Tamil Nadu, India, 2021 oleh Sharan Murali, Manikandanesan Sakthivel, Kamaraj Pattabi, Vettrichelvan Venkatasamy, Jeromie Wesley Vivian Thangaraj, Anita Shete, Alby John Varghese, Jaganathan Arjun, Chethrapilly Purushothaman Girish Kumar, Pragya D Yadav, Rima Sahay, Triparna Majumdar, Manisha Dudhmal, Azhagendran Sivalingam, Sudha Rani Dhanapal, Augustine Durai Samy, Vijayaprabha Radhakrishnan, Murali Mohan Muni Krishnaiah, Suresh Arunachalam, Punita Muni Krishna Gandhi, Elavarasu Govindasamy, Prabhakaran Chinnappan, Dhana Priya Vadhani Sekar, Prakash Marappan, Ezhil Pounraj, Parasuraman Ganeshkumar, Murugesan Jagadeesan, Manish Narnaware, Gagandeep Singh Bedi, Prabhdeep Kaur, Manoj Murhekar