National aggregate estimates of infection mask important local variations: e.g. most S. haematobium infections in the Niger occur in the Niger River valley.
全国的感染总量估值掩盖了重要的地方变量，例如，尼日尔大多数的埃及血吸虫感染发生在尼日尔河流域。
Children with s. haematobium almost always have microscopic blood in their urine and this can be detected by chemical reagent strips.
埃及血吸虫病患儿的尿中几乎始终有微量血，为此可用化学试剂条进行检验。
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