When you get a fever from a bug bite, it is possible that you are infected with a bacteria or a virus that causes the fever to remain unabated. After being bitten by a bug, it is possible to be infected with a virus or bacteria, such as scrub typhus, dengue fever and malaria. It is possible for these diseases to cause a fever that stays on. These diseases may not be treated by ordinary antibiotics, and need to be treated with targeted drugs such as minocycline, artemisinin, chloroquine, and so on. If the fever does not go down, you should go to the hospital to improve the scrub typhus antibody, blood smear, dengue fever pathogen and other related tests for clarification. High fever does not go away, if it lasts for a long time, it may endanger the patient’s life. It is recommended to clarify the cause of the disease as soon as possible and actively treat it.