Eating fruit after vaccination will not affect the effect of the vaccine, and there is no need to change your daily diet after vaccination. When eating fruit after vaccination, try not to eat fruit stored in the refrigerator for a long period of time, so as to avoid the fruit being too cold, which may cause gastrointestinal irritation and lead to vomiting and diarrhea. Some of the vaccinated patients may experience mild fever, pain and nausea after vaccination, which can be easily confused with adverse reactions to the vaccine and lead to misdiagnosis due to the discomfort caused by improper diet. Therefore, medical professionals will advise vaccinated patients to eat a light diet and avoid spicy and irritating food or hairy food.