One of the mysteries of the English language finally explained.
nounPlural rickettsiae, Plural rickettsias
Any of a group of very small bacteria that include the causative agents of typhus and various other febrile diseases in humans. Like viruses, many of them can only grow inside living cells, and they are frequently transmitted by mites, ticks, or lice.
Genus Rickettsia, order Rickettsiales; Gram-negative rods
- ‘It was interesting to note that neither the viruses nor the rickettsiae multiplied in this cell line.’
- ‘Typhus is caused by rickettsia, bacteria-like microorganisms transmitted through blood-sucking insects such as fleas, lice, and ticks.’
- ‘These diseases result from a variety of infectious agents including bacteria, rickettsia, viruses and protozoa, or they may be caused by substances produced by the tick.’
- ‘Biological weapons can come in a variety of forms, including viruses, bacteria, and rickettsia (bacteria that can live inside host cells like viruses).’
- ‘It usually takes several hours of attachment and feeding before the rickettsiae are transmitted to the host.’
Modern Latin, named after Howard Taylor Ricketts (1871–1910), American pathologist.
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