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  2. Host factor - Wikipedia

    en.wikipedia.org/wiki/Host_factor

    Host factors that may vary in a population and affect disease susceptibility can be innate or acquired. Some examples: [1] general health; psychological characteristics and attitude; nutritional state; social ties; previous exposure to the organism or related antigens; haplotype or other specific genetic differences of immune function ...

  3. Hypnotic susceptibility - Wikipedia

    en.wikipedia.org/wiki/Hypnotic_susceptibility

    Hypnotic susceptibility scales, which mainly developed in experimental settings, were preceded by more primitive scales, developed within clinical practice, which were intended to infer the "depth" or "level" of "hypnotic trance" on the basis of various subjective, behavioural or physiological changes.

  4. Host–parasite coevolution - Wikipedia

    en.wikipedia.org/wiki/Host–parasite_coevolution

    Host–parasite coevolution is a special case of coevolution, where a host and a parasite continually adapt to each other. This can create an evolutionary arms race between them. A more benign possibility is of an evolutionary trade-off between transmission and virulence in the parasite, as if it kills its host too quickly, the parasite will ...

  5. Red Queen hypothesis - Wikipedia

    en.wikipedia.org/wiki/Red_Queen_hypothesis

    In multi-host and multi-parasite coevolution, the Red Queen dynamics could affect what host and parasite types will become dominant or rare. [13] Science writer Matt Ridley popularized the term in connection with sexual selection in his 1993 book The Red Queen , in which he discussed the debate in theoretical biology over the adaptive benefit ...

  6. Host switch - Wikipedia

    en.wikipedia.org/wiki/Host_switch

    In parasitology and epidemiology, a host switch (or host shift) is an evolutionary change of the host specificity of a parasite or pathogen. For example, the human immunodeficiency virus used to infect and circulate in non-human primates in West-central Africa, but switched to humans in the early 20th century.

  7. Host (psychology) - Wikipedia

    en.wikipedia.org/wiki/Host_(psychology)

    The host is often the personality that seeks treatment. [1] Therefore, the psychotherapists often deal primarily with the host personality. Part of the therapeutic process for DID involves helping the host recognize the alters and become aware when the alters are present. [5] In some cases, the host is unaware of any alters or even that they ...

  8. Host (biology) - Wikipedia

    en.wikipedia.org/wiki/Host_(biology)

    The black rat is a reservoir host for bubonic plague. The rat fleas that infest the rats are vectors for the disease. In biology and medicine, a host is a larger organism that harbours a smaller organism; [1] whether a parasitic, a mutualistic, or a commensalist guest . The guest is typically provided with nourishment and shelter.

  9. Susceptible individual - Wikipedia

    en.wikipedia.org/wiki/Susceptible_individual

    To understand the rationale behind this relation, think of A as the length/amount of time spent in the susceptible group (assuming an individual is susceptible before contracting the disease and immune afterwards) and L as the total length of time spent in the population. It thus follows that the proportion of time spent as a susceptible is A/L ...