Assertion: bacterial infection | /r/CreatedBy | pneumococci
Facets:
value: commonly
type: TEMPORAL
Source sentences:
text: Bacterial infections are commonly caused by pneumococci, staphylococci, and streptococci, all of which are often commensals (that is, organisms living harmlessly on their hosts) in the upper respiratory tract but that can become virulent and cause serious conditions, such as pneumonia, septicemia (blood poisoning), and meningitis.