Symptoms and Signs of Viral Pneumonia

Doctor's Notes on Viral Pneumonia

Viral pneumonia is an infection of the lung by a viral type or strain. Signs and symptoms of viral pneumonia common to most viral lung infections include low fever (less than 102 F), coughing up some mucus, tiredness and muscle aches. Severe viral infection signs and symptoms may include persistent cough, short of breath, severe chest pain and weakness, coughing up blood, vomiting, dehydration, unable to eat or drink. Severe infections of some viruses like Influenza A type H1N1 may cause death in some patients.

Causes of most viral pneumonias can be Influenza A and B, Respiratory syncytial virus (RSV, usually in children), Adenovirus, Parainfluenza and rarely, Varicella viruses. Occasionally, outbreaks occur with other viruses.

Medical Author:
Medically Reviewed on 3/11/2019

Do I Have Pneumonia? Symptoms & Signs Quiz

Pneumonia Quiz

What is pneumonia?

See Answer


Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.