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  3. www.healthline.com › bacterial-vs-viral-infectionsBacterial vs. Viral Infections: What’s the Difference?

    Differences. Transmission. Diagnosis. Treatment. FAQs. Prevention. Takeaway. Most bacterial and viral infections are contagious, and different types of pathogens may lead to symptoms of varying...

  4. www.bbc.co.uk › bitesize › guidesPathogens - Communicable diseases - AQA - GCSE Biology ... - BBC

    Pathogens are disease-causing viruses, bacteria, fungi or protists, which can infect animals and plants. Humans have an immune system, which can defend them from pathogens.

  5. www.mayoclinic.org › diseases-conditionsInfectious diseases - Symptoms & causes - Mayo Clinic

    Feb 18, 2022 · Infectious diseases can be caused by: Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis. Viruses. Even smaller than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS. Fungi.

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  7. www.britannica.com › science › infectious-diseaseInfectious disease | Definition, Types, & Causes | Britannica

    Aug 10, 2024 · Infectious disease is a process caused by an agent, often a microorganism, that impairs a person’s health. Infectious diseases typically are caused by bacteria, viruses, fungi, or parasites.

  8. my.clevelandclinic.org › health › diseasesInfectious Disease: Types, Causes & Treatments - Cleveland Clinic

    Jun 6, 2022 · Infectious diseases are illnesses caused by harmful agents (pathogens) that get into your body. The most common causes are viruses, bacteria, fungi and parasites. Infectious diseases usually spread from person to person, through contaminated food or water and through bug bites.

  9. www.mayoclinic.org › diseases-conditionsInfection: Bacterial or viral? - Mayo Clinic

    Feb 4, 2023 · In some cases, it can be hard to figure out if a bacterial infection or a viral infection is causing your symptoms. Both infections can cause the same diseases, such as pneumonia, meningitis and diarrhea.

  10. www.verywellhealth.com › viral-vs-bacterialViral vs. Bacterial Infection: What’s the Difference?

    Oct 18, 2022 · A viral infection is an illness caused by a virus. Common viral infections include COVID-19, influenza (the flu), and chicken pox. Bacterial infections are caused by bacteria. These types of germs cause ailments that include strep throat, tetanus, and anthrax .

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