COVID is a respiratory condition similar to influenza. Covid-19 is assumed to be a viral infection that produces fever, chills, sore throat, muscle aches, and cough that can last a week or more. The vast majority of people naturally recover from Covid-19 without any complications and develop immunity to future infection with the same strain or a related SARS strain. This may prevent illness symptoms or make illness less severe. The risk of Covid-19 has been assessed as similar to a mild to moderate influenza. Children and healthy individuals under the age of 50 years are not at risk from Covid-19.
For more information: https://www.nvic.org/disease-vaccine/covid19