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 that provide protection against the virus. In Hong Kong, hepatitis B vaccine is a safe and effective vaccine that is usually given in infancy and adolescents. Vaccination with hepatitis B vaccine can effectively prevent hepatitis B virus infection and reduce the risk of developing chronic hepatitis or cirrhosis. Typically, hepatitis B vaccine requires multiple doses to ensure adequate immune protection. There may be mild discomfort after 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: Hepatitis B vaccine is usually injected into the muscle of the upper arm. Generally, both adults and children can receive this vaccine. Before vaccination, doctors will assess the patient's condition to ensure they are suitable for vaccination. Hepatitis B vaccine is usually recommended as directed by your doctor, and multiple doses may be needed to ensure adequate protection.
Dosing Guidelines: The standard dose of hepatitis B vaccine is 0.5 ml each time. For adults and children, it is generally recommended to receive three doses of the vaccine, with a specific time interval between the first, second and third doses. The starting dose is usually given within one month of receiving the second dose, followed by the third dose 6 months later. Additional doses or vaccination schedules may be needed for certain populations, such as patients with compromised immune systems. During the vaccination process, doctors will evaluate individual circumstances and provide appropriate dosage guidelines. After receiving the hepatitis B vaccine, you may need to have periodic tests to ensure adequate protection.
After taking the hepatitis vaccine, some people may experience mild side effects, such as pain, swelling, or redness at the injection site. A small number of people may have more serious reactions, including fever, headache, fatigue, muscle pain or diarrhea. Very rarely, allergic reactions such as difficulty breathing, vomiting, or skin redness and swelling may occur. If you have serious side effects, seek medical attention immediately. After receiving the vaccine, observe your body's reaction and consult your doctor promptly if you feel any discomfort.
Drug contraindications: Hepatitis B vaccine
Hepatitis B vaccine is a vaccine used to prevent infection with the hepatitis B virus, but vaccination should be avoided or delayed in certain circumstances. The following are some contraindications to hepatitis B vaccine:
1. People who are allergic to any component of the hepatitis B vaccine should avoid vaccination.
2. People who have experienced 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 for recovery before considering vaccination.
Before receiving the hepatitis B vaccine, patients should tell their doctor about their medical history and any allergic reactions. If you have any concerns or uncertainties, you should seek the advice of a physician or medical professional. Follow your doctor's advice and instructions to ensure vaccination is appropriate and safe.
Note on use: After receiving the hepatitis B vaccine, minor side effects such as local pain, fever or discomfort may occur. If you have a severe allergic reaction, seek medical attention immediately. It is recommended to get vaccinated 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. According to research, the hepatitis B vaccine has no significant harmful effects on the fetus during pregnancy. However, for safety reasons, it is generally recommended that pregnant women try to avoid vaccinations during pregnancy, especially in the first three months of pregnancy, because this period is a critical period for fetal development.
If you are pregnant or trying to become pregnant, tell your doctor about your pregnancy. Your doctor will evaluate the risks and pros and cons based on your specific situation and provide you with professional advice.
In short, the use of hepatitis B vaccine during pregnancy should be done with caution and preferably under the guidance of a doctor. If you have received or plan to receive the hepatitis B vaccine, be sure to inform your doctor about your pregnancy so that the doctor can provide you with the most appropriate advice and treatment plan.
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