Christophersen J
Arch Dermatol. 1978 May;114(5):747-50.
Denmark is the only country in which scabies has been reported for many decades. The present study is based on 850,629 cases reported between 1900 and 1975. The incidence of scabies showed pronounced peaks around 1918 and 1945. Since the end of the 1960s, a new increase in incidence has been observed. The rates were high and rather uniform among infants, children, and young adults. Before puberty, the rate for girls was on an average 1.4 times higher than for boys. Scabies showed the same incidence in the capital as in the provinces, and marked seasonal variations occurred, with a winter maximum and a summer minimum. No single factor could be identified to explain the cyclic occurrence in time, the sex and age pattern, and the seasonal variation. These patterns probably have a multifactorial genesis!
丹麦是数十年来一直有疥疮报告的唯一国家。本研究基于1900年至1975年间报告的850629例病例。疥疮发病率在1918年和1945年左右出现明显峰值。自20世纪60年代末以来，观察到发病率有新的上升。在婴儿、儿童和年轻人中发病率较高且相当均匀。青春期前，女孩的发病率平均比男孩高1.4倍。疥疮在首都和各省的发病率相同，且有明显的季节性变化，冬季最高，夏季最低。无法确定单一因素来解释其在时间上的周期性出现、性别和年龄模式以及季节性变化。这些模式可能是由多种因素造成的！
