Assessing the effectiveness of COVID-19 vaccines in older people in Latin America

Abstract

Following their introduction towards the end of 2020, COVID-19 vaccines have been evaluated in terms of prevention of complications, hospitalisation rates, and mortality levels among those who are vaccinated compared with those who are not. Assessing the efficacy of vaccines is crucial for their use, but studies that assess real-world effectiveness of vaccines are also highly relevant, especially those comparing the efficacy of available vaccines in a specific country and those assessing efficacy in specific population groups that differ on certain factors (eg, age and gender)...