" In severe cases, COVID can lead to complications of other illnesses, including pneumonia. Pneumonia is an infection of the lungs that can cause a cough, shortness of breath, fever, or chest pain. It is possible to develop more mild cases of pneumonia in moderate cases of COVID. In this instance, many patients may not know they have pneumonia as the symptoms are similar to COVID itself. For more information on COVID-19, read AFC Urgent Care ...