THE RELATIONSHIP OF THE HABITS OF THE HOUSE MOUSE AND THE MOUSE MITE (ALLODERMANYSSUS SANGUINEUS) TO THE SPREAD OF RICKETTSIALPOX

Abstract
Maps of the distribution of cases of rickettsialpox in New York City, and showing the income range of inhabitants (standard of living) and the parks, seem to indicate that rickettsialpox is most prevalent in middle and upper income areas. In slum areas and areas of high population density, cases are few and scattered, possibly because of the scanty mouse population in areas where Norway rats abound. It is assumed that conditions which favor stable populations of the house mouse, with some overlapping of the range of colonies, favor the development of endemic foci of rickettsialpox. In some instances cases tended to be concentrated around parks. Poorly heated dwellings and dwellings with very low humidities, are unfavorable for the mite, A. sanguineus.

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