There have been confirmed reinfection cases, so following COVID-appropriate behavior like wearing masks & social distancing are vital after recovery.
COVID-19 is an infectious disease caused by the coronavirus discovered in late 2019. People infected with COVID-19 would experience mild to moderate respiratory illness. It spreads through discharge from the nose or droplets of saliva launched into the air when an infected person coughs or sneezes and land in the mouths or noses of people nearby.
The precautions include pre-screening for fever and other symptoms, wearing a mask, washing hands frequently with soap and water, and practicing social distancing.
WHO is reviewing the evidence on antibody responses to COVID infection. The WHO stated that recovered people have antibodies to the virus, but some have deficient levels of neutralizing antibodies in their blood, suggesting that cellular immunity may also be critical for recovery. No study has currently assessed whether the presence of COVID-19 antibodies confers immunity to subsequent reinfection by the virus in humans.
In Hong Kong, a person suffered reinfection with a different variant of the virus. The first time the virus had one sequence, and several months later, the virus had a different sequence in the second infection. Similarly, two staff members at a hospital in India became reinfected with COVID-19 several months later and had no symptoms in either instance.
The COVID-19 pandemic has given rise to a lot of potentially dangerous misinformation. For reliable advice on COVID-19 including symptoms, prevention and available treatment, please refer to the World Health Organisation or your national healthcare authority.