Will I get a fever after getting the Japanese encephalitis vaccine?

Japanese encephalitis is a prevalent infectious disease that is extremely destructive to the brain. Once you contract this disease, it will cause great harm to your body. Therefore, the occurrence of Japanese encephalitis is very unfortunate, but this disease is completely preventable. For example, the Japanese encephalitis vaccine is a very necessary vaccination program in modern life. However, many vaccines have certain side effects. Let’s take a look at whether getting the Japanese encephalitis vaccine will cause fever?

Japanese encephalitis vaccines must be tested by the state and proven to be harmless to the human body before they can be used. However, because most vaccines stimulate the body's functions to make certain reactions for self-protection, some people will experience certain side effects due to physical problems after the vaccination. However, many of these side effects after vaccination will disappear on their own after a period of time. If the symptoms are severe, it is recommended to go to the hospital for diagnosis and treatment immediately.

Side effects of Japanese encephalitis vaccination

1. The first symptom is fever, with a mild fever of 37-37.5℃, a moderate fever of 37.6-38.5℃, and a fever above 39℃ being severe. In addition, some babies may experience headaches, dizziness, general weakness, chills, nausea, vomiting, abdominal pain, diarrhea, etc. The above reactions generally subside within 24 hours and rarely last for more than 3 days. If the fever is severe, you can take antipyretics. Generally, after the body temperature returns to normal, other symptoms will also subside. If the high fever does not subside or there are other abnormalities, you should go to the hospital for treatment in time.

2. Local side effects usually appear about 24 hours after vaccination, and redness, swelling, heat and pain may occur at the injection site. Severe reactions can cause inflammation of nearby lymph nodes and lymphatic vessels. The swelling and nodules at the injection site can range from mild, moderate to severe. Mild cases have a diameter of less than 2.5 cm, moderate cases have a diameter of 2.5-5 cm, and cases exceeding 5 cm are severe reactions, which may last for several hours. If the local redness and swelling are severe, you can apply hot compress (hot compress is strictly prohibited for redness and swelling after BCG vaccination). Once in the morning and once in the evening, each time for about 5 minutes. And you should change your underwear frequently to avoid infection after ulceration. If local infection occurs, apply gentian violet.