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Expansion and intensification of large-scale animal feeding operations (AFOs) in the United States has resulted in concern about environmental contamination and its potential public health impacts. The objective of this investigation was to obtain background data on a broad profile of antimicrobial residues in animal wastes and surface water and groundwater(More)
Scabies, a mite infestation frequently sexually transmitted, dates back to antiquity but remains a challenging parasite for study in clinical practice and community settings. Its history is one of centuries of slow progress to recognize the mite and to finally establish its nexus to the clinical syndrome of pruritis with several protean manifestations and(More)
One health is a concept since early civilization, which promoted the view that there was no major distinction between animal and human medicine. Although persisting through the 19th century, this common vision was then all but forgotten in the early 20th century. It is now experiencing a renaissance, coincident with an awakening of the role that(More)
The clinical diagnosis, treatment management, and epidemiology of a case of unilateral posterior ophthalmomyiasis in a university farm manager are reported. Subretinal tracking was prominent, leading to vision abnormalities, which initially prompted the patient to seek medical evaluation. Identification of the organism based on study of photographs was(More)
During August, 1981, a person with an unrecognized case of atypical Norwegian scabies was admitted to a community hospital in Chariton, Iowa. Twenty cases of symptomatic scabies were reported among hospital staff; mites were recovered from four. Subsequent evaluation confirmed scabies transmission to family and friends of this patient before(More)
The following series of concise summaries addresses the evolution of infectious agents in relation to sex in animals and humans from the perspective of three specific questions: (1) what have we learned about the likely origin and phylogeny, up to the establishment of the infectious agent in the genital econiche, including the relative frequency of its(More)