Spectrum of Enteric Parasitic Infections in Immunocompromised and Immunocompetent Patients in a Tertiary Care Hospital, New Delhi- A Retrospective Study

Anuja Gupta, Monika Matlani, Vinita Dogra
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Abstract

Introduction: Parasitic intestinal diseases caused by protozoans and helminths are important causes of gastrointestinal disturbances which are responsible for a high burden of morbidity and mortality as they are detrimental not only to paediatric and immunocompromised patients but also to adults and immunocompetent patients. Hence, it is important to know their burden in a geographical area to develop adequate control measures. Aim: To estimate the prevalence of various intestinal parasitic infections in symptomatic patients based on age, gender and immune status in a tertiary care hospital, New Delhi, India. Materials and Methods: A retrospective analysis of 1431 stool samples which were received in the Department of Microbiology VMMC and Safdarjung Hospital, New Delhi, from April 2019 to March 2020 was done. All samples were subjected to macroscopic and microscopic examinations and underwent, wet mount (saline and iodine) examination and Modified Ziehl- Neelson staining. Data was analysed using Statistical Package for Social Sciences (SPSS) software version 21.0 with two- tailed Chi-square test wherever applicable. Results: Males (61.36%) outnumbered females. Prevalence of parasites was more in adults (7.76%) than in children. Higher positivity (7.6%) was observed in immunocompetent individuals as compared to immunocompromised. Overall predominance of protozoans (98.26%) over helminths was noted. Entamoeba histolytica/dispar group (43.60%) was found to be the most prevalent parasite. Entamoeba histolytica/dispar group (5.64%) and Cryptosporidium spp. (5.94%) were most common amongst immunocompetent and immunocompromised patients respectively. Conclusion: A higher prevalence of intestinal parasitic infections in immunocompetent symptomatic patients was observed, requiring attention of clinicians as they are no longer limited majorly to immunocompromised patients. As no effective vaccine is available for these infections, so appropriate laboratory methods, microbiological expertise, proper sanitation measures, availability of potable water supply and properly cooked food are essential to control parasitic intestinal diseases.
新德里一家三级医院免疫功能低下和免疫功能正常患者肠道寄生虫感染的频谱-一项回顾性研究
导语:由原生动物和蠕虫引起的肠道寄生虫病是胃肠道紊乱的重要原因,是造成高发病率和死亡率的原因,因为它们不仅对儿童和免疫功能低下的患者有害,而且对成人和免疫功能正常的患者也有害。因此,重要的是要了解它们在一个地理区域的负担,以便制定适当的控制措施。目的:根据年龄、性别和免疫状况,估计印度新德里一家三级医院有症状患者中各种肠道寄生虫感染的患病率。材料与方法:回顾性分析2019年4月至2020年3月在新德里VMMC微生物科和Safdarjung医院收到的1431份粪便样本。所有样本均接受肉眼和显微镜检查,并进行湿载片(生理盐水和碘)检查和改良Ziehl- Neelson染色。数据分析使用社会科学统计软件包(SPSS) 21.0版软件,采用双尾卡方检验。结果:男性(61.36%)多于女性。成人寄生虫患病率(7.76%)高于儿童。与免疫功能低下个体相比,免疫功能正常个体的阳性率更高(7.6%)。总体上原生动物(98.26%)优于蠕虫。溶组织内阿米巴/异速虫组(43.60%)是最常见的寄生虫。溶组织内阿米巴/异帕虫组(5.64%)和隐孢子虫(5.94%)分别在免疫功能正常和免疫功能低下患者中最常见。结论:肠道寄生虫感染在免疫功能正常的有症状患者中有较高的患病率,需要引起临床医生的注意,因为它们不再主要局限于免疫功能低下的患者。由于没有针对这些感染的有效疫苗,因此,适当的实验室方法、微生物专业知识、适当的卫生措施、可获得的饮用水供应和适当煮熟的食物对于控制肠道寄生虫病至关重要。
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