DO_infectious_disease_slim myiasis screw worm infectious disease DOID:12927 disease_ontology MESH:D012610 UMLS_CUI:C0036465 A myiasis that involves parasitic infestation of Cochliomyia hominivorax or Chrysomya bezziana larvae, which feed on the living tissues of warm-blooded animals. In Cochliomyia infestation, larvae migrate from the subdermis to other tissues in the body, causing extreme damage in the process. Chrysomya bezziana larvae feed and can cause permanent tissue damage.