Crotti Daniele, D'Annibale Maria Letizia
Libero Professionista in Parassitologia e Microbiologia Medica, Perugia, Italy.
Infez Med. 2007 Mar;15(1):30-9.
During 2004, we identified 39 intestinal infections caused by Dientamoeba fragilis and 23 caused by Giardia duodenalis, on 1141 home subjects (3.4% and 2.0% respectively): D. fragilis was observed in 4.5% of O and P (29/644 subjects suffering from aspecific bowel disorders) and in 2.0% of diarrhoeas (10/497); G. duodenalis was observed in 3.1% (20/644) and in 0.6% (3/497) of cases respectively. No other pathogenic parasites were identified (only 1 case of enterobiasis in an asymptomatic child). Commensal protozoa were observed, among O and P, in 4.3% of cases (28/644). The non-pathogenic B. hominis, often associated with other protozoa, was observed in 4.1% of all 1141 cases. D. fragilis is undoubtedly more frequent in adults (36/39 cases, 92.3%) than in children (3/39, 7.7%), and is prevalent among females (24/39, 61.5%) in respect of males (15/39, 38.5%). G. duodenalis is more prevalent among adults (16/23, 69.5%) than children (7/23, 30.5%), but is more frequent among males (13/23, 56.5%) than females (10/23, 43.5%). Clinical correlations of dientamoebiasis and giardiasis are reported, seasonal and epidemiological features of these protozooses are outlined, and the authors emphasize the importance and need of Giemsa stain, among O and P and acute or prolonged diarrhoeas, on the basis of previous good direct microscopic observations of faecal specimens, for correct and complete diagnosis of intestinal infections.
2004年期间，在1141名居家受试者中，我们鉴定出39例由脆弱双核阿米巴引起的肠道感染和23例由十二指肠贾第虫引起的肠道感染（分别占3.4%和2.0%）：在4.5%的粪便检查（O和P）中发现了脆弱双核阿米巴（644例患有非特异性肠道疾病的受试者中有29例），在2.0%的腹泻病例中发现了脆弱双核阿米巴（497例腹泻患者中有10例）；十二指肠贾第虫分别在3.1%（20/644）和0.6%（3/497）的病例中被发现。未鉴定出其他致病寄生虫（仅1例无症状儿童患蛲虫病）。在粪便检查（O和P）中，4.3%的病例（28/644）发现了共生原生动物。在所有1141例病例中，4.1%观察到了通常与其他原生动物相关的非致病性人芽囊原虫。毫无疑问，脆弱双核阿米巴在成年人中（39例中的36例，92.3%）比在儿童中（39例中的3例，7.7%）更常见，并且在女性中（39例中的24例，61.5%）比男性中（39例中的15例，38.5%）更普遍。十二指肠贾第虫在成年人中（23例中的16例，69.5%）比儿童中（23例中的7例，30.5%）更普遍，但在男性中（23例中的13例，56.5%）比女性中（23例中的10例，43.5%）更常见。报告了双核阿米巴病和贾第虫病的临床相关性，概述了这些原虫病的季节性和流行病学特征，并且作者强调，基于之前对粪便标本良好的直接显微镜观察结果，在粪便检查（O和P）以及急性或持续性腹泻中，吉姆萨染色对于正确和完整诊断肠道感染的重要性和必要性。
