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  1. Infection - Wikipedia

    The word infection can denote any presence of a particular pathogen at all (no matter how little) but also is often used in a sense implying a clinically apparent infection (in other words, a case …

  2. Infection: Types, causes, and differences - Medical News Today

    Sep 19, 2025 · An infection occurs when a microorganism — such as bacteria, fungi, or a virus — enters a person’s body and begins multiplying.

  3. Infectious Diseases: Types, Causes & Treatments

    May 16, 2025 · If you have an ongoing infection, frequent follow-ups with your provider can help ensure your condition doesn’t worsen. You should also talk to your provider if you plan to …

  4. What Are the 4 Types of Infections? - MedicineNet

    Infection occurs when germs enter your body and multiply, resulting in disease. The four main types of infections are viral, bacterial, fungal, and parasitic.

  5. Infectious diseases - Symptoms & causes - Mayo Clinic

    Apr 8, 2025 · Symptoms of infectious diseases vary depending on the cause of the infection. But they often include fever and tiredness. Rest and home remedies may clear up mild infections. …

  6. Infection Symptoms: Signs of Common Bacterial and Viral Infections

    Sep 7, 2025 · An infection is the invasion of the body by a disease-causing organism called a pathogen. Infections can be caused by a wide range of pathogens, including bacteria, viruses, …

  7. Infection | Description, Infectious Organisms, Transmission, …

    Infection is the process by which harmful microorganisms such as bacteria, viruses, fungi, or parasites enter cells and tissues in the body and cause disease.

  8. What Is an Infection? Causes, Types, Symptoms & Treatment ...

    What Is an Infection? An infection is a condition caused by harmful microorganisms such as bacteria, viruses, fungi, or parasites invading the body. These pathogens disrupt normal bodily …

  9. INFECTION Definition & Meaning - Merriam-Webster

    The meaning of INFECTION is the state produced by the establishment of one or more pathogenic agents (such as bacteria, protozoans, or viruses) in or on the body of a suitable host.

  10. How Infection Works - What You Need to Know About Infectious …

    Infection occurs when viruses, bacteria, or other microbes enter your body and begin to multiply. Disease, which typically happens in a small proportion of infected people, occurs when the …