: any of a subfamily (Spumaretrovirinae) of nonpathogenic retroviruses that occur in mammals and are sometimes transmitted to humans from nonhuman primates
called also spumavirus
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“Foamy virus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/foamy%20virus. Accessed 7 Nov. 2025.
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