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  2. Contagious disease - Wikipedia

    en.wikipedia.org/wiki/Contagious_disease

    A contagious disease is an infectious disease that can be spread rapidly in several ways, including direct contact, indirect contact, and droplet contact. [1] [2] These diseases are caused by organisms such as parasites, bacteria, fungi, and viruses. While many types of organisms live on the human body and are usually harmless, these organisms ...

  3. Immunocapitalism - Wikipedia

    en.wikipedia.org/wiki/Immunocapitalism

    Immunocapitalism describes the ways in which disease outbreaks and the acquisition of immunity are leveraged for economic and political gain. The concept highlights the intersection of health, capitalism, and power, demonstrating how social and economic inequalities are exacerbated by epidemics.

  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. Outline of infectious disease concepts - Wikipedia

    en.wikipedia.org/wiki/Outline_of_infectious...

    The following outline is provided as an overview of and topical guide to concepts related to infectious diseases in humans.. Infection – transmission, entry/invasion after evading/overcoming defense, establishment, and replication of disease-causing microscopic organisms (pathogens) inside a host organism, and the reaction of host tissues to them and to the toxins they produce.

  6. List of epidemics and pandemics - Wikipedia

    en.wikipedia.org/wiki/List_of_epidemics_and...

    Widespread non-communicable diseases such as cardiovascular disease and cancer are not included. An epidemic is the rapid spread of disease to a large number of people in a given population within a short period of time; in meningococcal infections , an attack rate in excess of 15 cases per 100,000 people for two consecutive weeks is considered ...

  7. Viral disease - Wikipedia

    en.wikipedia.org/wiki/Viral_disease

    A viral disease (or viral infection) occurs when an organism's body is invaded by pathogenic viruses, and infectious virus particles (virions) attach to and enter susceptible cells. [ 1 ] Examples include the common cold , gastroenteritis , COVID-19 , the flu , and rabies .

  8. Pathogen - Wikipedia

    en.wikipedia.org/wiki/Pathogen

    [2] [3] Typically, the term pathogen is used to describe an infectious microorganism or agent, such as a virus, bacterium, protozoan, prion, viroid, or fungus. [4] [5] [6] Small animals, such as helminths and insects, can also cause or transmit disease. However, these animals are usually referred to as parasites rather than pathogens. [7]

  9. Introduction to viruses - Wikipedia

    en.wikipedia.org/wiki/Introduction_to_viruses

    Life-cycle of a typical virus (left to right); following infection of a cell by a single virus, hundreds of offspring are released. When a virus infects a cell, the virus forces it to make thousands more viruses. It does this by making the cell copy the virus's DNA or RNA, making viral proteins, which all assemble to form new virus particles. [37]

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