What vaccination will cause fever?

I believe all parents know that vaccination is a preventive measure to prevent babies from developing some infectious or hereditary diseases such as hepatitis B or chickenpox. Many babies will experience adverse reactions after receiving vaccinations. Fever is a common condition after vaccination. So what vaccinations can cause fever? The following is a detailed introduction.

Vaccines are made of bacteria, viruses or their toxins. Although these pathogenic factors have been inactivated or attenuated, they are all foreign proteins or antigenic substances that have a certain stimulating effect on the human body. Therefore, after the baby receives the vaccination, it may cause local or systemic reactions of varying degrees, among which fever is the most common reaction. Moreover, as age increases and the number of vaccinations increases, the fever will become more severe.

For most infants, low-grade fever is more common and generally does not require special treatment and will resolve on its own after 1-2 days. A few infants also have stronger reactions, sometimes with body temperature exceeding 39°C, which may be accompanied by systemic reactions such as loss of appetite, nausea and vomiting. At this time, they should rest, pay attention to water replenishment, and use warm water baths. If necessary, they should take antipyretic drugs such as pediatric antipyretic tablets, Motrin, and Baifuning under the guidance of a doctor. If you still have a fever 2-3 days after the vaccination, you may have a secondary infection and should go to the hospital for emergency treatment.

A transient fever may occur after vaccination, which is generally below 38.5 degrees, but may exceed this temperature in some individual cases. If the fever is caused by vaccination, you can just give antipyretic treatment and there is no need for oral cold medicine. However, there are also cases of upper respiratory tract infections caused by viral infections after vaccination. At this time, you should check whether there are any cold symptoms such as runny nose, nasal congestion or sneezing, or whether there is congestion in the throat. If you have these symptoms, you can take oral cold medicine.