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  2. Contagious disease - Wikipedia

    en.wikipedia.org/wiki/Contagious_disease

    In the modern-day, the term has sometimes been broadened to encompass any communicable or infectious disease. Often the word can only be understood in context, where it is used to emphasize very infectious, easily transmitted, or especially severe communicable diseases. In 1849, John Snow first proposed that cholera was a contagious disease.

  3. Disease - Wikipedia

    en.wikipedia.org/wiki/Disease

    The agents of communicable diseases are invaders; non-communicable diseases constitute internal insurrection or civil war. Because the threat is urgent, perhaps a matter of life and death, unthinkably radical, even oppressive, measures are society's and the patient's moral duty as they courageously mobilize to struggle against destruction.

  4. Infection - Wikipedia

    en.wikipedia.org/wiki/Infection

    An infectious disease, also known as a transmissible disease or communicable disease, is an illness resulting from an infection. Infections can be caused by a wide range of pathogens, most prominently bacteria and viruses. [2] Hosts can fight infections using their immune systems.

  5. Infectious diseases (medical specialty) - Wikipedia

    en.wikipedia.org/wiki/Infectious_diseases...

    Infectious diseases (ID), also known as infectiology, is a medical specialty dealing with the diagnosis and treatment of infections. An infectious diseases specialist's practice consists of managing nosocomial (healthcare-acquired) infections or community-acquired infections. [1]

  6. Disease outbreak - Wikipedia

    en.wikipedia.org/wiki/Disease_outbreak

    By convention, a communicable disease outbreak is declared over when a period of twice the incubation period of the infectious disease has elapsed without identification of any new case, however, for organisms with a short incubation period (e.g. fewer than ten days), a period of three times the incubation period is preferred. [11]

  7. Epidemic - Wikipedia

    en.wikipedia.org/wiki/Epidemic

    A zoonosis is an infectious disease of humans caused by a pathogen that can jump from a non-human host to a human. [35] Major diseases such as Ebola virus disease and salmonellosis are zoonoses. HIV was a zoonotic disease transmitted to humans in the early part of the 20th century, though it has now evolved into a separate human-only disease. [36]

  8. What is ‘Disease X’ and why are experts worried? - AOL

    www.aol.com/disease-x-why-experts-worried...

    Health authorities around the world are still grappling with lessons learned at the start of the Covid-19 pandemic and trying to determine the best way to prevent a new one.. Many researchers have ...

  9. Pathogen - Wikipedia

    en.wikipedia.org/wiki/Pathogen

    Diseases in humans that are caused by infectious agents are known as pathogenic diseases. Not all diseases are caused by pathogens, such as black lung from exposure to the pollutant coal dust , genetic disorders like sickle cell disease , and autoimmune diseases like lupus .