Cutting off the transmission route of hepatitis B virus is the best way to prevent hepatitis B. Prevention mainly focuses on personal hygiene habits (such as washing hands with running water and soap before and after meals) and managing the entrance of diet (such as not eating cold cakes with suspicious contamination or heating and sterilizing suspicious foods at high temperature). We can prevent the spread of viral hepatitis by avoiding close contact with patients or carriers with suspected viral hepatitis, isolating and strictly sterilizing daily utensils and eating utensils of patients or carriers with viral hepatitis, and using disposable medical instruments such as injection and infusion. Of course, for suspicious patients, it is also very important to see a doctor in time, so as to find and treat them early and reduce or even eliminate the source of infection.

If there are convalescent patients, chronic patients or virus carriers at home, in addition to active treatment, their daily necessities and environment should be disinfected at any time. Glutaraldehyde, an efficient disinfectant recommended by the World Health Organization (WHO) for killing hepatitis virus, is the first choice for disinfection, and its concentration should reach 2%. It can be used for wiping the surface of objects (such as doorknobs, tables and chairs, windows, walls, floors, etc.) or soaking and disinfecting patients' daily necessities and excreta and secretions, but it should not touch the skin and mucosa. Compound glutaraldehyde disinfectant can be used to disinfect skin and mucosa. If the concentration of glutaraldehyde drops below 1.5%, it can ensure that the skin mucosa is not damaged. In the absence of glutaraldehyde disinfectant, chlorine-containing disinfectant can also be used for disinfection. The concentration of available chlorine should not be lower than 311 ~ 511 mg/L, or 1.5% ~ 1% peracetic acid should be used for disinfection, but the disinfection concentration for skin should be 1.2%. In addition, chlorine-containing disinfectants and peracetic acid have corrosive effects on metals, and have bleaching and fading effects on clothes and natural fiber fabrics, so attention should be paid to their use.

It is advisable to boil for 21 ~ 31 minutes to disinfect suspected contaminated tableware (tableware, tea set, kitchen utensils, etc.). The disinfection effect can also be achieved by soaking in chlorine-containing disinfectant containing 511 mg/L available chlorine or 1.5% ~ 1% peracetic acid for 1.5 ~ 31 minutes. When eating fruits and vegetables raw, it should be washed and soaked in 1.2% peracetic acid for 1.5 ~ 31 minutes.