Asked about how the U.S. are infected hepatitis ah?
Still do not understand my explanation Troublesome U.S. help explain thank you
Answer:
First, hepatitis A virus is mainly discharged from the intestine, through the daily life of contacts oral transmission.
Hepatitis B virus can be scheduled through a variety of body fluids to the body, such as through blood, semen, vaginal secretions, saliva, milk, menstruation, tears, urine, sweat and so on.
Hepatitis C, mainly through blood transfusion, blood products and wound infection.
Hepatitis D and Hepatitis B in the same route of transmission, intravenous drug use, male homosexuality, prostitution and the regular application of blood products, or kidney dialysis patients, the disease in high-risk groups. HEV mainly through contaminated water sources, by the fecal oral yuk67 means of infection.
Hepatitis F virus has not yet been successfully isolated, the pathogen has not yet been determined and recognized. Its mode of transmission is not very clear. HGV route of transmission with hepatitis B, hepatitis C is basically the same as
Second, hepatitis B infection has four channels: one mother to child transmission is generally believed that hepatitis B surface antigen carriers in approximately 1 / 3 (about 3 million) from mother to child transmission. Early because of infection, more than 90% of the development of for chronic infection. studies show that children before the age of 6 after infection, the risk of chronicity is 30%, while adult-acquired infection, only 5% of the chronicity. HBsAg (hepatitis B surface antigen)-positive HBsAg in particular with HBeAg (hepatitis B e antigen) double-positive mothers Infectious strong. the virus is mainly transmitted through the following: (1) intrauterine transmission. mainly transmitted through the placenta. for HBsAg and HBeAg double-positive pregnant women, at an advanced stage of pregnancy (7,8 , 9 months), one times the monthly injection of high titer of hepatitis B immunoglobulin, and pregnant women can be in the hepatitis B virus in vivo, reduce the incidence of intrauterine infection. (2) intrauterine infection. refers to childbirth the process of inhalation of neonatal hepatitis B virus containing the maternal blood, amniotic fluid and vaginal secretions were infected; at the same time through the neonatal damaged skin or mucous membrane infection. newborns after birth with hepatitis B vaccine Hepatitis B Immunoglobulin United injection can be effective prevention. (3) post-natal infection. newborns in close contact with their mothers may also be transmitted. of newborns with hepatitis B vaccine and hepatitis B immunoglobulin United vaccination can effectively block this transmission. 2 and iatrogenic spread of blood-borne hepatitis B virus primarily exists in the patient's blood, so blood is one important means of dissemination. such as: blood transfusion or use of blood products, hemodialysis, by needle or scalpel stab accident, shared razor, and toothbrush, tattoos, and other fillings. 3 sexually transmitted hepatitis B surface antigen carriers of male semen is contagious. HBsAg positive patients the semen into the vagina after the chimpanzee, chimpanzees happened Experimental hepatitis B infection prompted the Department of spouses of hepatitis B surface antigen carriers, must use condoms when having sexual intercourse. 4 other ways the father of infant hepatitis B may also be the dissemination of mother to child transmission of hepatitis B virus infection in infants are the main way, but the survey shows that the spread can also be the father of infant cause of infant hepatitis B, but did not arouse enough attention to. studies have shown that hepatitis B patients with sperm does hepatitis B virus, HBV-DNA could exist in the cytoplasm of the sperm head, through fertilization, you can at progeny cells continue to reproduce, happened progeny cell infection, caused by the spread of hepatitis B infant and parent. Father infant transmission happened early in life, a survey, when the father of surface antigen, e antigen double-positive, their baby's probability of infection of up to 80%; when the father e antibody-positive, their offspring's risk of infection for about 20%. the father of infant hepatitis B virus transmission probability larger than the mother to child transmission, but also easily lead to life-long carry. from pre-started blocking the father of infant HBV transmission, if patients with chronic hepatitis B are accompanied by abnormal liver function, available anti-viral treatment to reduce infectious sick later, under the guidance of specialists have targeted the use of security liver drugs to maintain a period of time, can be pregnant.
