 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST] -7967. In Canada, you may call the Vaccine Safety Section at Public Health Agency of Canada at 1-866-844-0018.The precautions of Prehevbrio (PF) Intramuscular: Before you receive this vaccine, tell the health care professional if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients (such as latex rubber or yeast found in some brands), which can cause allergic reactions or other problems. Talk to your health care professional for more details. Before using this vaccine, tell your health care professional your medical history, especially of: current illness with fever. If you are a hemodialysis patient, you may not respond as well to the vaccine and will need to have hepatitis B antibody levels checked yearly. If antibodies drop too low over time, you may be given another dose of vaccine (often called a booster shot). If you have immune system disorders (such as due to HIV infection, certain cancers such as leukemia/lymphoma, cancer or radiation treatment), your body may not make enough antibodies to protect you from hepatitis B infection. Antibody levels may be checked after the vaccine series. Older adults may not make as many antibodies to the vaccine. </s>