Hemorrhagic fever is spread by respiratory, gastrointestinal, mother-to-child, insect-borne, and direct contact. Hemorrhagic fever refers to epidemic hemorrhagic fever, which is a natural epidemic disease caused by hemorrhagic fever virus, and rats are the main source of infection. 1. respiratory transmission: after contaminating the air with feces and secretions of rodents carrying the virus, susceptible people will become infected when they inhale the virus. 2. Digestive tract transmission: After contaminating water or food with excretions or secretions of rodents carrying the virus, infection will occur through the mucous membranes of the digestive tract. 3. Mother-to-child transmission: If the hemorrhagic fever virus is present in the mother’s body, it may be transmitted to the baby through the placenta. 4. Insect-borne transmission: Blood-sucking arthropod insects such as mites are the main vectors of rodent viruses, and the virus can be transmitted when mites with the virus come into contact with human beings. 5. Direct contact transmission: If you come into contact with the feces and secretions of rodents with the virus, or if you are bitten by rodents, you will also be infected. In daily life, we need to do a good job of hygiene and cleanliness, and kill the infectious source in time to avoid infection.