Why do some individuals always seem to be healthy while other people often get viruses and bacteria? Despite sleeping close to their sick partner every night, how can a sick person’s spouse avoid contracting their illness? During the COVID-19.

First identified in 2019 in Wuhan, China, Coronavirus disease 2019 (COVID-19) is an infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). It has spread globally, resulting in the 2019–20 coronavirus pandemic.