Medical Definition of rat mite
: a widely distributed mite of the genus Ornithonyssus (O. bacoti synonym Bdellonyssus bacoti) that usually feeds on rodents but may cause dermatitis in and transmit typhus to humans
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“Rat mite.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/rat%20mite. Accessed 7 Aug. 2022.
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