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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 of infectious …

  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

    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 travel outside of the country you …

  4. Infection | Description, Infectious Organisms, Transmission, Prevention ...

    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.

  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. But other …

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

    6 days ago · Infections can occur throughout the body whether caused by bacteria, viruses, parasites, or fungi. Learn some of the signs and symptoms of an infection.

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

    2 days ago · 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 …

  8. 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.

  9. 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.

  10. Infection | definition of infection by Medical dictionary

    The invasion of bodily tissue by pathogenic microorganisms that proliferate, resulting in tissue injury that can progress to disease: measures taken by the hospital to prevent infection.