Arene F O, Ukpeibo E T, Nwanze E A
Public Health. 1989 Jul;103(4):295-301. doi: 10.1016/s0033-3506(89)80043-5.
Ova of S. intercalatum have been found in the urban city of Port Harcourt in the Niger Delta area of Nigeria, following examination of stool and urine samples from 1,709 persons (5-15 years of age) resident in various parts of the city. The ova occurred only in urine, with prevalence ranging from 1.0% to 9.8% with an overall prevalence of 5.7%. The intensity of the infection was low. Most infected individuals had counts of less than 500 ova in total bladder content. There was no significant difference in either the prevalence or intensity of the infection among the sexes (Male; prevalence 6.1%, intensity 527.3 vs Female; prevalence 5.4%, intensity 500.9). No case of infection with either S. haematobium or S. mansoni was encountered in the study. Malacological surveys in the gutters, creeks, streams and stagnant waterbodies within the city showed the presence of Lymnaea natalensis, Bulinus forskalii, Pila ovata, Melanoides tuberculata, Physa sp., Lanistes ovum and Segmentorbis sp. B. forskalii is indicated as the probable vector of S. intercalatum in the city. The growing problem of urban schistosomiasis in tropical Africa is discussed. Further studies on urban transmission and epidemiology of schistosomiasis in the Niger Delta area of Nigeria is also indicated.
在对居住在尼日利亚哈科特港这座城市不同区域的1709名（5至15岁）居民的粪便和尿液样本进行检查后，在尼日利亚尼日尔三角洲地区的城市哈科特港发现了间插血吸虫卵。这些虫卵仅出现在尿液中，患病率在1.0%至9.8%之间，总体患病率为5.7%。感染强度较低。大多数受感染个体膀胱内的虫卵总数少于500个。男女之间在感染的患病率或强度方面均无显著差异（男性；患病率6.1%，强度527.3；女性；患病率5.4%，强度500.9）。在该研究中未发现感染埃及血吸虫或曼氏血吸虫的病例。对该城市内的排水沟、小溪、河流和死水水体进行的软体动物学调查显示，存在纳塔尔椎实螺、福氏小泡螺、卵形瓶螺、瘤拟黑螺、泡螺属、卵形兰氏螺和裂环螺属。福氏小泡螺被认为是该城市中间插血吸虫的可能传播媒介。讨论了热带非洲城市血吸虫病日益严重的问题。还指出需要对尼日利亚尼日尔三角洲地区城市血吸虫病的传播和流行病学进行进一步研究。
