Correlation of Age, Gender, ABO Blood Group and Rh Factor in COVID-19 Infection: A Cross-Sectional Study in Udaipur, Rajasthan, India.

Background: The ABO blood group has long been recognized as a significant factor influencing susceptibility to infectious diseases. Numerous studies have explored the links between ABO blood types and both the likelihood of contracting COVID-19 and the severity of the infection, yielding conflicting results.

Aim: This study intends to determine the influence of age, gender, the ABO blood group, and Rh factor on the potential development of COVID-19 infection.