Assertion: c. psittaci | /r/CapableOf | produce human infection
Facets:
value: only sporadically
type: DEGREE
Source sentences:
text: C. pneumoniae and C. trachomatis are obligatory human pathogens, whereas C. psittaci primarily infects mammals and birds and produces human infection only sporadically; C. pecorum infects only ruminants such as cattle and sheep, and is not known to infect humans.