project |
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Name/scientific name |
HEPATITIS B VACCINE
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Self-financed or subsidized by the Hospital Authority |
Hospital Authority Drug Formulary
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Indications |
Chronic liver disease, cirrhosis, acute hepatitis, liver cancer prevention
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body system |
Immunization preparations and vaccines
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type |
Vaccines and antisera
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Hepatitis B vaccine is a vaccine used to prevent hepatitis B virus infection. The vaccine contains proteins called surface antigens that help the body produce antibodies, which provide protection against the virus. In Hong Kong, the hepatitis B vaccine is a safe and effective vaccine that is usually given during infancy and adolescence. Vaccination with hepatitis B vaccine can effectively prevent hepatitis B virus infection and reduce the risk of developing chronic hepatitis or cirrhosis. Typically, multiple doses of the hepatitis B vaccine are required to ensure adequate immune protection. You may have mild discomfort after the vaccination, such as fever or pain at the injection site, but these symptoms are usually temporary. If you have any questions or need more information, please consult a medical professional.
How to use: The hepatitis B vaccine is usually given by injection into the muscle of the upper arm. Generally, both adults and children can receive this vaccine. Before vaccination, the doctor will assess the patient's condition to ensure that the vaccine is appropriate. Hepatitis B vaccination is usually recommended as directed by your doctor, and you may need to receive multiple doses to ensure full protection.
Dosage Guidelines: The standard dose of Hepatitis B vaccine is 0.5 ml each time. For adults and children, three doses of the vaccine are usually recommended, with specific intervals between the first, second, and third doses. The starting dose is usually followed by the second dose within one month of the first dose, and the third dose 6 months after that. Additional doses or vaccination schedules may be needed for specific populations, such as those with compromised immune systems. During the vaccination process, the doctor will assess the individual's situation and provide appropriate dosage guidelines. After receiving the hepatitis B vaccine, you may need regular checkups to ensure adequate protection.
After taking the hepatitis vaccine, some people may have mild side effects such as pain, swelling, or redness at the injection site. A small number of people may experience more severe reactions, including fever, headache, fatigue, muscle pain or diarrhea. Very rarely, you may experience an allergic reaction such as difficulty breathing, vomiting, or redness or swelling of the skin. If you experience serious side effects, seek medical attention immediately. After vaccination, observe your body's reactions. If you feel any discomfort, consult a doctor immediately.
Drug contraindications: Hepatitis B vaccine
Hepatitis B vaccine is used to prevent hepatitis B virus infection, but vaccination should be avoided or delayed in certain circumstances. The following are some contraindications to the hepatitis B vaccine:
1. People who are allergic to any component of the hepatitis B vaccine should avoid vaccination.
2. People who have had severe allergic reactions (such as difficulty breathing, urticaria, dizziness, etc.) are not suitable for vaccination.
3. Pregnant women should avoid vaccination during pregnancy unless their doctor deems it necessary.
4. Patients with severe immunodeficiency diseases (such as HIV infection, leukemia, etc.) should be vaccinated with caution.
5. It is not advisable to receive hepatitis B vaccine during fever or acute illness. You should wait until you recover before considering vaccination.
Before receiving the hepatitis B vaccine, patients should tell their doctors about their medical history and any allergies they have had. If you have any concerns or are unsure, you should seek the advice of your doctor or medical professional. Follow your doctor's advice and instructions to ensure that the vaccination is appropriate and safe.
Precautions for use: After receiving the hepatitis B vaccine, minor side effects such as local pain, fever or discomfort may occur. In case of severe allergic reaction, seek medical attention immediately. It is recommended to receive the vaccination at a qualified medical institution and closely follow the doctor's instructions.
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Hepatitis B vaccine should be used with caution during pregnancy. Studies have shown that hepatitis B vaccine has no obvious harmful effects on the fetus during pregnancy. But for safety reasons, it is generally recommended that pregnant women avoid vaccination during pregnancy as much as possible, especially in the first three months of pregnancy, as this period is a critical period for fetal development.
If you are pregnant or planning to become pregnant, tell your doctor about your pregnancy. Your doctor will assess the risks and pros and cons based on your specific situation and then give you professional advice.
In short, the use of hepatitis B vaccine during pregnancy should be cautious and is best done under the guidance of a doctor. If you have received or plan to receive the hepatitis B vaccine, be sure to tell your doctor about your pregnancy so that your doctor can give you the most appropriate advice and treatment plan.
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