The New Crown vaccine does not usually cause encephalitis. If encephalitis is diagnosed, you should go to the hospital and receive symptomatic and causative treatment based on the signs and symptoms. The New Crown vaccine has undergone rigorous safety testing and clinical trials and is relatively safe. So far, no one has had a serious reaction to the vaccine, and no one has had encephalitis as a result of the New Crown vaccine. Most people do not have any reaction to the New Crown vaccine. A few people will have adverse reactions and may have symptoms such as fever and weakness, but the symptoms are mild and usually last for only one to two days. Encephalitis, on the other hand, is an inflammatory lesion caused by a variety of biological pathogens, including viruses, bacteria, spirochetes, and parasites that invade the brain parenchyma. The main clinical manifestations of encephalitis are high fever, headache, vomiting, coma, convulsions, etc. Therefore, vaccination with New Crown vaccine will not cause encephalitis. If encephalitis is present, treatment should be adjunctive depending on the cause and symptoms. If it is viral encephalitis, antiviral treatment can be given, and attention needs to be paid to maintaining nutrition and water and electrolyte balance, and patients with high fever can be treated with temperature lowering and sedation.