Sources of hepatitis B infection: patients with acute hepatitis, patients with chronic hepatitis and carriers of hepatitis B virus. The main transmission route of hepatitis B virus: the main transmission route is blood transmission (blood transfusion and blood products), i.e. non-intestinal transmission or percutaneous transmission, where percutaneous transmission refers to the transmission of hepatitis B virus through contact after the skin mucous membrane is broken; secondly, mother-to-child transmission, i.e. infection of the newborn by the mother with hepatitis B virus before and after delivery and during the process, breastfeeding can also lead to mother-to-child transmission, this transmission route in China The third is close contact transmission, such as the transmission of hepatitis B virus through semen and vaginal secretions; the fourth is medical transmission, such as unsafe injection, not to do “one person, one needle, one tube The fourth is medical transmission, such as unsafe injections, not to do “one person, one needle, one tube”, contaminated syringes and needles, etc. become a way of transmission of hepatitis B virus.
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