A few people may experience fever after vaccination and may also experience dizziness, general weakness and discomfort, which usually last 1-2 days. In case of fever, it is recommended to take more rest, drink warm water in moderation, and pay attention to observation. If the axillary temperature exceeds 38.5℃, in addition to the above treatment, you need to take antipyretic drugs such as ibuprofen to reduce fever. If the fever exceeds 3 days, you need to go to the hospital for examination to see if there are any other problems. In addition to the fever caused by the vaccine, you should also pay attention to whether the fever is caused by the cold or other diseases, and this situation needs to go to the hospital for examination.