Adverse effects of Haemophilus influenzae type B vaccination

Adverse reactions of vaccination with Haemophilus influenzae type B vaccine may include fever, nausea, vomiting, loss of appetite, diarrhea and other symptoms, which generally appear within 48 hours after vaccination and can recover spontaneously after 48 hours. If the fever does not exceed 38.5 degrees, physical cooling can be used; when the fever reaches 38.5 degrees or more, infection may be considered.