Assertion: pneumonia | /r/CreatedBy | the influenza virus
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Pneumonia is often caused by viruses, such as the influenza virus (flu) and adenovirus.
text: In some cases, like pneumonia caused by the flu virus, nausea and vomiting are common side effects.
text: Yearly flu vaccines can help prevent pneumonia caused by influenza viruses.
text: Pneumonia is often caused by viruses, such as the influenza virus (flu) and adenovirus.