What percentage of patients may experience systemic effects after Hepatitis B vaccination?

The percentage of patients who may experience systemic effects after Hepatitis B vaccination is reported to be around 15%. This typically includes symptoms such as mild fever, fatigue, or malaise, which are generally not severe and resolve on their own. The 15% figure is significant as it helps healthcare providers prepare patients for possible mild side effects while reassuring them that these effects are common and usually not a cause for concern. Understanding this information is crucial for informed consent, as it encourages patients to discuss any concerns they may have regarding side effects before receiving the vaccine. While other percentages may reflect higher rates of systemic effects, they are not consistent with the established data in vaccine studies, emphasizing the relevance of the 15% figure in clinical contexts.