You should be aware of the different agents that can spread infection. This can help you manage your risk factors.  Bacteria are the most common infectious agents. They can be transmitted via bodily fluids and food. They are single cell living microorganisms that use your body as a home base to replicate. Viruses are pathogens that cannot live outside the host. When a virus enters your body, they hijack your body’s cells to multiply and spread to neighboring cells. Fungi are simple, plant-like living organisms that may take up residence in your body. Parasites are living organisms that hijack the host’s body and use their resources to thrive. Antibiotics are medications that fight off bacterial infections. They work by disabling or killing bacterial cells and thus, fastening the elimination of bacteria by your immune system.  Use topical antibiotic ointments for small wounds that are infected. Signs of infection include redness, swelling, warmth and pain. Do not use antibiotic ointment for heavily bleeding wounds that are deep. Seek medical attention if you have a wound that does not stop bleeding. For systemic bacterial infections, visit your healthcare provider and ask if you should be taking oral antibiotics. It is important to understand that antibiotics cannot cure or treat viral infections, such as the cold or flu. Your doctor can diagnose bacterial versus viral infection and treat it appropriately. Take antibiotics only as directed. Taking antibiotics when you don’t need them (such as when you have a viral infection) increases bacterial resistance to antibiotics. Viral infections cannot be treated with antibiotics but there are some antiviral medications that can be used for certain viruses. Some viral infections are treated with at home remedies (such as rest and remaining hydrated).  Some drugs, known as antiviral or antiretroviral drugs, can fight off certain viruses by taking away their ability to reproduce their DNA inside your cells. Some viral infections, such as the common cold, only need to...

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Write a summary of the previous text in Vietnamese:
Hiểu các loại bệnh lây nhiễm khác nhau. Điều trị nhiễm vi khuẩn bằng kháng sinh. Điều trị tình trạng nhiễm virus. Biết cách điều trị bệnh nhiễm nấm. Biết cách điều trị bệnh nhiễm ký sinh trùng.