Researchers have revealed that a DNA test can quickly identify secondary infections in Covid-19 patients who have double the risk of developing pneumonia while on ventilation. What Is Covid-19 Pneumonia? Pneumonia is a lung infection that causes inflammation in the tiny air sacs inside your lungs. They may fill up with so much fluid and pus that it’s hard to breathe. Most people who get COVID-19 have mild or moderate symptoms like coughing a fever and shortness of breath. But some who catch the new coronavirus get severe pneumonia in both lungs. COVID-19 pneumonia is a serious illness that can