Definition of "rickettsiae" [rickettsiae]

• Plural form of rickettsia. (noun)

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• "It was presumed to be due to a virus, and as Australia's only recognized virologist, material from guinea pigs was sent down to him. 8 On histological examination of tissues from an infected mouse he noticed a "vague herringbone pattern" which recalled what he had seen in psittacosis and had read about for rickettsiae, and using Castaneda's stain he had no doubt that the organism was a rickettsia."
• "Infected lice pass rickettsiae in their faeces within two to six days after the blood meal; it is infective earlier if crushed."
• "Infected lice excrete rickettsiae when feeding on a second host."