Prevalence and Genotyping of Water- and Food-Borne Parasitic Protozoans (<i>Giardia duodenalis</i> and <i>Cryptosporidium</i> spp.) in Hospitalized Patients from Northwestern Romania
2024
Angela Monica Ionică | Anca Ieremia | Zsuzsa Kalmár | Mihaela Lupșe | Mirela Flonta | Monica Muntean | Cristina Cismaru | Melinda Horvat | Amanda Rădulescu | Adriana Topan | Cristian Jianu | Georgiana Deak | Violeta Briciu
<i>Giardia duodenalis</i> and <i>Cryptosporidium</i> spp. are important zoonotic protozoan pathogens that infect the gastro-intestinal tract of numerous vertebrates, including humans, and both parasites are responsible for water- or food-borne outbreaks of disease worldwide. Although, globally, both parasites are highly prevalent, particularly in developing countries, epidemiological data from Romania are scarce, and genotyping has rarely been performed. The aims of the present study were to investigate the occurrence and genetic diversity of <i>G. duodenalis</i> and <i>Cryptosporidium</i> spp. in patients hospitalized in Northwestern Romania in relation to clinical and paraclinical presentation and to identify the relative frequency of non-specific symptoms and potential risk factors. Between June 2022 and January 2024, 426 fecal samples were screened for gastro-intestinal parasites by rapid tests and microscopical examination, further confirmed by PCR and sequencing. <i>Giardia duodenalis</i> was detected and characterized in 12 samples (2.82%), while <i>Cryptosporidium parvum</i> was confirmed in four samples (0.94%). A majority of positive patients were symptomatic and reported nausea and vomiting with a significantly higher frequency compared to negative ones. This study provides new insights into the epidemiological status and clinical implications of gastro-intestinal parasite species and genospecies in Romania that are necessary for an in-depth understanding of the potential zoonotic transmission and improvement of patient care.
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