Signs and symptoms of viral pneumonia can vary in severity. These can include
Other associated symptoms can include
In severe cases, blueness of the lips and nails may occur.
Causes of viral pneumonia
Many different viruses can cause pneumonia. Examples include influenza virus, coronaviruses (including SARS-CoV-2), respiratory syncytial virus (RSV), herpesviruses, rhinoviruses, and others. About 30% of all cases of pneumonia are believed to be caused by viral infections. The infections spread through droplets of fluid that scatter in the air when an infected person coughs or sneezes.
Other viral pneumonia
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