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Ascariasis: host-pathogen biology.

Z S Pawlowski

    Reviews of Infectious Diseases
    |July 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    Ascariasis, caused by Ascaris lumbricoides, is a widespread parasitic infection. Improved sanitation can prevent it, but it persists in developing nations due to inadequate waste disposal.

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    Area of Science:

    • Parasitology
    • Public Health
    • Immunology

    Background:

    • Ascaris lumbricoides is a highly prevalent intestinal parasite globally.
    • Soil contamination with A. lumbricoides eggs is extensive, with approximately 9 x 10^14 eggs shed daily.
    • Environmental factors like temperature and moisture influence egg maturation and survival.

    Purpose of the Study:

    • To review the epidemiology, transmission, and host responses to Ascaris lumbricoides infection.
    • To discuss the factors influencing ascariasis prevalence and clinical manifestations.
    • To highlight the public health implications of ascariasis, particularly in developing countries.

    Main Methods:

    • Literature review of epidemiological studies on ascariasis.
    • Analysis of factors affecting Ascaris lumbricoides egg viability and transmission.

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  • Examination of host immune responses to different parasite stages.

    • Main Results:

    • Ascariasis transmission is linked to socioeconomic factors and inadequate sanitation, especially in developing countries.
    • Host immune responses are more pronounced during larval migration than with adult worms.
    • Clinical symptoms and severity depend on infection intensity and host health status.

    Conclusions:

    • Ascariasis is preventable with improved sanitation and public health measures.
    • The parasite causes significant morbidity and mortality, primarily through complications like intestinal obstruction.
    • Further research is needed to clarify the link between ascariasis and allergic asthma.