MeSH definition : A tribe of gram-negative bacteria of the family RICKETTSIACEAE whose organisms are
found in arthropods and are pathogenic for man and certain other vertebrate hosts.;
MeSH annotation : a tribe: do not confuse with RICKETTSIACEAE, a family; infection: coord IM with RICKETTSIACEAE
INFECTIONS (IM);
A tribe of gram-negative bacteria of the family RICKETTSIACEAE whose organisms are
found in arthropods and are pathogenic for man and certain other vertebrate hosts.