This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T., Subject name: Medicine
[{'content': 'Hepatitis B can transmitted through all EXCEPT: \nSelect and explain. \nA. Milk, B. Semen, C. Stool, D. Blood', 'role': 'user'}, {'content': 'Answer: C \nExplanation: ANSWER: (C) StoolREF: With textHowever universal precaution is not needed for breast milk (no occupational hazard), Human breast milk has been implicated in perinatal transmission of HIV, and HBsAg has been found in the milk of mothers infected with HBV (REF: JAMA 1988; 259:1353-6. Lifson AR, Bond WW, Petersen NJ, Gravelle CR, Favero MS. Hepatitis B virus in peritoneal dialysis fluid: A potential hazard. Dialysis and Transplantation 1982; 11:592-600.)Harrison says that\'s serum, semen and saliva are most infectious for hepatitis B transmission Robbin\'s 7th ed says that hepatitis B antigen is present in all body secretions except stoolsCDC GUIDELINES: (REF: style="color: rgba(20, 20, 20, 1); font-family: Times New Roman, Times, serif">)Extension of blood and body fluid precautions to all patients is referred to as "Universal Blood and Body Fluid Precautions" or "Universal Precautions." Under universal precautions, blood and certain body fluids of all patients are considered potentially infectious for human immunodeficiency virus (HIV), hepatitis B virus (HBV), and other bloodborne pathogens.BODY FLUIDS TO WHICH UNIVERSAL PRECAUTIONS APPLY:Universal precautions apply to blood and to other body fluids containing visible blood.Blood is the single most important source of HIV, HBV, and other bloodborne pathogens in the occupational settingUniversal precautions also apply to tissues and to the following fluids: semen and vaginal secretions, cerebrospinal fluid (CSF), synovial fluid, pleural fluid, peritoneal fluid, pericardial fluid, and amnio tic fluid.BODY FLUIDS TO WHICH UNIVERSAL PRECAUTIONS DO NOT APPLY:Universal precautions do not apply to feces, nasal secretions, sputum, sweat, tears, urine, and vomitus unless they contain visible bloodThe risk of transmission of HIV and HBV from these fluids and materials is extremely low or nonexistent.Human breast milk has been implicated in perinatal transmission of HIV, and HBsAg has been found in the milk of mothers infected with HBV (10, 13). However, occupational exposure to human breast milk has not been implicated in the transmission of HIV nor HBV infection to health-care workers.Whereas universal precautions do not apply to human breast milk, gloves may be worn by health-care workers in situations where exposures to breast milk might be frequent, for example, in breast milk banking.* Universal precautions do not apply to saliva. Saliva of some persons infected with HBV has been shown to contain HBV-DNA at concentrations 1/1,000 to 1/10,000 of that found in the infected person s serum. HBsAg-positive saliva has been shown to be infectious when injected into experimental animals and in human bite exposures', 'role': 'assistant'}]