TA的每日心情 | 奋斗
2019-12-3 00:05 |
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签到天数: 1333 天 [LV.10]大乘
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这是网上摘抄的一段，只要有细小的伤口就有感染可能。所以一度撕裂和四度撕裂对于乙肝传播来讲没有区别。
"Where is the hepatitis B virus found and how is it transmitted?
Blood is the major source of the hepatitis B virus in the workplace. It can also be found in other tissues and body fluids, but in much lower concentrations. The risk of transmission varies according to the specific source. The virus can survive outside the body for at least 7 days and still be able to cause infection.
Blood
Direct contact with infected blood can transmit the hepatitis B virus through:
Punctures of the skin with blood-contaminated needles, lancets, scalpels, or other sharps.
Direct contact with open sores of an infected person.
Splashes to skin bearing minute scratches, abrasions, burns, or even minor rashes.
Splashes to mucous membranes in the mouth, nose, or eyes.
To a lesser extent, indirect contact with blood-contaminated surfaces can also transmit the hepatitis B virus. The virus may be stable in dried blood for up to 7 days at 25°C. Hand contact with blood-contaminated surfaces such as laboratory benches, test tubes, or laboratory instruments may transfer the virus to skin or mucous membranes.
Saliva
Saliva of people with hepatitis B can contain the hepatitis B virus, but in very low concentrations compared with blood. Injections of infected saliva can transmit the virus, so bite injuries can also spread the disease. There are no reports of people getting hepatitis B from mouth contact with infected CPR manikins, sharing utensils, or mouthpieces of musical instruments.
Other Body Fluids and Tissues
Hepatitis B is found in semen and vaginal secretions. The virus can be transmitted during unprotected sexual intercourse, and from mother to infant during birth.
Synovial fluid (joint lubricant), amniotic fluid, cerebrospinal fluid, and peritoneal fluid (found in the abdominal cavity) can contain the hepatitis B virus, but the risk of transmission to workers is not known.
Feces, nasal secretions, sputum, sweat, tears, urine, and vomit have not been implicated in the spread of hepatitis B. Unless they are visibly contaminated with blood, the risk of contracting hepatitis B from these fluids in the workplace is very low.
Hepatitis B is not transmitted by casual contact. For example, hospital employees who have no contact with blood, blood products, or blood-contaminated fluids are at no greater risk than the general public. However, the virus can spread through intimate contact with carriers in a household setting, possibly because of frequent physical contact with small cuts or skin rashes. The virus can also spread through biting and possibly by the sharing of toothbrushes or razors. It is not spread through sneezing, coughing, hand holding, hugging, kissing, breastfeeding, sharing eating utensils, water or food.
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雷达卡
发表于 2018-7-24 20:26:58
显身卡
楼主
，感谢补充说明。