What causes Viral pneumonia?
Viral pneumonia is more likely to occur in young children and older adults, because their bodies have a harder time fighting off the virus. Viral pneumonia is most often caused by one of several viruses:
Adenovirus Influenza Parainfluenza Respiratory syncytial virus
People who are at risk for more serious viral pneumonia often have a weakened immune system, including:
Adult HIV / AIDS patients Babies who are born too early Children with heart and lung problems People receiving chemotherapy for cancer, or other medications that weaken the immune system. Organ transplant recipients </s>