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Friday, March 1, 2019

Does Cerumen have a risk for transmission of diseases? Essay

I learned in the A & P subscriber line that ear wax (or earwax) is a waxy secretion by ceruminous gland (= modified sebaceous gland), mixed with sloughed epithelial cells, which inhibits the harvesting of accepted bacteria due to its acidic pH. It also protects the skin of the external auditive canal by providing a waterproof layer, so, its something beneficial to us. sure as shooting enough, there appear to be a number of conditions written to financing this Bactericidal activity of cerumen, Chai & Chai (ref 1), Bactericidal activity of wet cerumen, Stone & Fulghun (ref 2), and so forth (though this concept is refuted by a later translate (ref 3))On the other hand, I could find only when very few articles that talk about the role that ear wax plays in disease contagious disease or as a portal of exist for pathogens. I started with an article by Kemp & Bankaitis (ref 4), in which it is stated that cerumen is not considered an infectious agent until it becomes dirty with assembly line or mucus, and it can even be placed in the regular trash unless significant amount of blood or mucose is present.So, it appears the danger is not in cerumen itself but in blood/mucous contaminant. CDC lists Hepatitis B, Hepatitis C, HIV and Viral Hemorrhagic Fever(VHF) as infectious diseases by bloodborne pathogens (ref 5).On the topic of cerumen itself transmitting bloodborne viruses, I could find only two articles, both by the same group of researchers, Beyindir, Kalcioglu et al. First article is on the study of possible transmission of Hepatitis B (ref 6), in which the authors pause that cerumen can be a potential source of transmission and further investigation for horizontal, nosocomial, and occupational transmission is necessary. The second article is on Hepatitis C, and it concludes that cerumen has no risk, even in patients with high HCV RNA blood serum levels. I could not find any articles to confirm/deny cerumen as a source of transmission for HIV or VHF.I think our text book lists ear wax as a portal of exit for pathogens, because of more than minimal potential risk of contamination by blood, during treatment of otitis, removal of impacted ear wax etc. performed by otolaryngologists/audiologists on a regular basis.Referrences1 Antimicrobial Agents and Chemotherapy, 1980 Oct18(4) 638-412 The autobiography of otology, rhinology, and laryngology, 1984 Mar-Apr93(2 Pt 1) 183-63 Influence of human wet cerumen on the growth of common and pathogenic bacteria of the ear, Campos, Betancor, et al., The Journal of laryngology and otology, 2000 Dec114(12) 925-94 transmitting Control in Audiology, http//web.clas.ufl.edu/users/sgriff/infectioncontrol.pdf5 http//www.cdc.gov/ncidod/hip/Blood/blood.htm6 Does cerumen make up a risk for transmission of hepatitis B?, The Laryngoscope, 2004 Mar114(3) 577-807 Detection of HCV-RNA in cerumen of chronically HCV-infected patients, The Laryngoscope, 2005 Mar115(3) 508-11

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