What to do if a child has a fever after vaccination
Recently, the issue of fever in children after vaccination has become a hot topic among parents. Many parents feel very anxious when they find that their children have fever symptoms after receiving vaccinations. This article will combine the hot topics and hot content on the Internet in the past 10 days to provide you with detailed answers to the causes, countermeasures and precautions of children having fever after vaccination.
1. Why do children have fever after vaccination?

Fever is a common immune response after vaccination, usually because ingredients in the vaccine stimulate the immune system, causing the body temperature to rise. Here is a comparison of common vaccines and fever rates:
| Vaccine name | Fever incidence | fever duration |
|---|---|---|
| DTP vaccine | 30%-50% | 1-2 days |
| measles vaccine | 10%-15% | 1-3 days |
| flu vaccine | 5%-10% | 1 day |
| Hepatitis B vaccine | 1%-5% | 1 day |
2. What should I do if my child has a fever after being vaccinated?
1.Observe body temperature: If the body temperature is below 38.5°C, there is usually no need for special treatment. Just drink plenty of water and rest appropriately.
2.physical cooling: You can wipe your child’s forehead, armpits, palms and other parts with warm water to help cool down.
3.Medication to cool down: If the body temperature exceeds 38.5°C, you can use antipyretics such as ibuprofen or acetaminophen as recommended by your doctor.
4.diet conditioning: Provide children with light and easy-to-digest foods and avoid greasy or irritating foods.
5.keep ventilated: Ensure indoor air circulation and avoid wearing too many clothes.
3. Under what circumstances do you need medical treatment?
While fever is usually normal after vaccination, the following conditions require prompt medical attention:
| Symptoms | Possible reasons | Suggestions |
|---|---|---|
| Body temperature exceeds 39°C and persists | May be complicated by other infections | seek medical attention immediately |
| Have a fever for more than 3 days | non-vaccine reaction | Medical examination |
| Rash and difficulty breathing | allergic reaction | emergency medical attention |
| Listlessness, refusal to eat | severe discomfort | seek medical attention immediately |
4. Common misunderstandings about fever after vaccination
1.Myth 1: Fever means there is something wrong with the vaccine: In fact, fever is a sign that the immune system is working normally, indicating that the vaccine is working.
2.Misunderstanding 2: You must take antipyretics immediately: No medication is needed when you have low fever. Excessive use of antipyretics may mask the condition.
3.Misunderstanding 3: Can’t take a shower: As long as you keep warm, taking a bath can help physically cool you down.
4.Myth 4: All vaccines cause fever: Different vaccines have different probabilities of fever, and some vaccines rarely cause fever.
5. How to reduce the probability of fever after vaccination?
1.Preparation before vaccination: Make sure your child is in good health and has no cold, fever or other symptoms.
2.Post vaccination care: Drink plenty of water and avoid strenuous exercise after vaccination.
3.Pay attention and observe: Observe your child’s reaction closely within 24 hours after vaccination.
4.Eat properly: Maintain a balanced diet before and after vaccination to enhance immunity.
6. Expert advice
According to recent recommendations from pediatric experts, parents should stay calm and respond scientifically when their children have a fever after vaccination. Vaccination is one of the most effective ways to prevent diseases. A mild fever reaction is normal and there is no need to worry too much. If any abnormality occurs, just seek medical treatment in time.
In short, it is common for children to have fever after vaccination, and parents do not need to be overly nervous. With scientific care and observation, most children's fever symptoms will be relieved quickly. If something abnormal occurs, timely medical treatment is the safest choice.
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