A systematic review and meta-analysis of Hymenolepis nana in human and rodent hosts in Iran: A remaining public health concern

Goudarzi, Fatemeh; Mohtasebi, Sina; Teimouri, Aref; Yimam, Yonas; Heydarian, Peyman; Sangani, Ghodratollah Salehi; Afshar, Mohammad Javad Abbaszadeh

doi:10.1016/j.cimid.2020.101580

Cited by 11 publications

(7 citation statements)

References 51 publications

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“…A total of 13 gastrointestinal helminth species were found; however, the richness estimation suggests that additional work is necessary to better determine parasite richness and to identify all parasite species inhabiting the gastrointestinal tracts of rats and mice in Chile. Two of the helminth species reported herein, H. diminuta and R. nana, have been frequently reported to infect humans elsewhere (38)(39)(40); however, they were found with low frequency and abundance in the present study. Other zoonotic species, S. obvelata, and S. muris, were more prevalent and abundant in their hosts, M. musculus and Rattus spp., respectively, but there are only a few reports of them infecting humans (41,42).…”

Section: Discussioncontrasting

confidence: 66%

Patterns of Gastrointestinal Helminth Infections in Rattus rattus, Rattus norvegicus, and Mus musculus in Chile

Grandón-Ojeda

Moreno²,

Garcés-Tapia³

et al. 2022

Front. Vet. Sci.

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Few studies have assessed the patterns of parasite populations of rodents over a longitudinal gradient in Chile. In this work, the gastrointestinal helminthic fauna of invasive rodents in Chile was examined to assess the association between their presence/absence and abundance with latitude, host sex, and host body condition, and to assess the coexistence and correlation of the abundance between parasite species. Rodents were obtained from 20 localities between 33 and 43°S. Helminths were extracted from the gastrointestinal tract and identified morphologically. Overall, 13 helminth taxa were obtained. The most frequently identified parasite species was Heterakis spumosa, and the most abundant was Syphacia muris, while Physaloptera sp. was the most widely distributed. No locality presented with a coexistence that was different from that expected by chance, while the abundance of five helminthic species correlated with the abundance of another in at least one locality, most likely due to co-infection rather than interaction. Host sex was associated with parasite presence or abundance, and female sex-biased parasitism was notably observed in all cases. Body condition and latitude presented either a positive or negative association with the presence or abundance of parasites depending on the species. It is notable that the likely native Physaloptera sp. is widely distributed among invasive rodents. Further, gravid females were found, suggesting spillback of this species to the native fauna. The low frequency and abundance of highly zoonotic hymenolepid species suggest that rodents are of low concern regarding gastrointestinal zoonotic helminths.

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Section: Discussioncontrasting

confidence: 66%

Patterns of Gastrointestinal Helminth Infections in Rattus rattus, Rattus norvegicus, and Mus musculus in Chile

Grandón-Ojeda

Moreno²,

Garcés-Tapia³

et al. 2022

Front. Vet. Sci.

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“…In line with our findings, A. lumbricoides , E. vermicularis , S. stercoralis , and H. nana were the most predominant helminths reported among food handlers and intellectually disabled individuals in Iran (Teimouri et al 2020 ; Abbaszadeh Afshar et al 2021 ). Although the prevalence of human helminthic diseases has decreased in recent decades throughout Iran, some of them, particularly those with direct fecal–oral transmissions, such as Enterobius and Hymenolepis , are still common (Rokni 2008 ; Goudarzi et al 2021 ).…”

Section: Discussionmentioning

confidence: 99%

Intestinal parasitic infections among patients referred to hospitals affiliated to Shiraz University of Medical Sciences, southern Iran: a retrospective study in pre- and post-COVID-19 pandemic

Teimouri

Alimi

Farsi

et al. 2022

Environ Sci Pollut Res

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Intestinal parasitic infections (IPIs) are still a serious public health problem worldwide, particularly in developing countries. The COVID-19 pandemic has affected people’s lifestyles and quality of life. Besides, the prevalence of IPIs is directly associated with environmental sanitation, overcrowding, and personal hygiene. Therefore, the current study aimed to determine the prevalence of IPIs among patients referred to hospitals affiliated to Shiraz University of Medical Sciences by reviewing the available data of hospital information system database in the pre- and post-COVID-19 pandemic. The total data of 13,686 patients referred to hospitals affiliated to Shiraz University of Medical Sciences, southern Iran were collected from March 2019 to March 2021. The overall prevalence of IPIs was found to be 4.4%, and Blastocystis spp. was the most common parasite. The prevalence of protozoan parasites (4.4%) was significantly higher than helminthic parasites (0.04%, P < 0.001). A significant association was observed between IPIs with age, gender, and year ( P < 0.05). The prevalence of IPIs among those referred to hospitals before the COVID-19 pandemic was higher than those referred to hospitals during the COVID-19 pandemic (5.8% vs 2.8%), and the differences were statistically significant ( P < 0.001). The odds of infection among people investigated during the COVID-19 pandemic was about 40% lower than those investigated before the COVID-19 pandemic (AOR: 0.60, 95% CI: 0.49–0.73, P < 0.001). Our results showed that the prevalence of IPIs has decreased during the COVID-19 pandemic. Improved sanitation, personal hygiene, and health education can be effective in reducing parasitic infections in the COVID-19 pandemic.

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“…vermicularis and S. stercoralis following H. nana were the most predominant helminth records among intellectually disabled individuals in Iran. Institutions for intellectually disabled individuals have been reported to be hyper-endemic for several helminths, such as S. stercoralis and E. vermicularis (24). The high prevalence of these species could be attributable to the fact that these species can easily be spread in crowded places, such as rehabilitation centers and their dormitories where the person-to-person is the main mode of intestinal parasites transmission due to close contact.…”

Section: Discussionmentioning

confidence: 99%

“…The high prevalence of these species could be attributable to the fact that these species can easily be spread in crowded places, such as rehabilitation centers and their dormitories where the person-to-person is the main mode of intestinal parasites transmission due to close contact. On the other hand, autoinfection, as a hallmark of enterobiasis, strongyloidiasis, and hymenolepiasis, could cause protracted infection in intellectually disabled individuals [23][24][25]. Although the prevalence of human helminthic diseases has plunged in recent decades throughout Iran, some of them, particularly those with direct fecal-oral transmissions, such as Enterobius and Hymenolepis, remain common [26].…”

Section: Discussionmentioning

confidence: 99%

Intestinal parasites among intellectually disabled individuals in Iran: a systematic review and meta-analysis

et al. 2021

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Background Poor self-care skills and personal hygiene resulted from limitations in learning and understanding, put intellectually disabled individuals at greater risk for intestinal parasitic infections (IPIs). Despite several regional reports in Iran, the overall burden on IPIs among intellectually disabled individuals is poorly understood. Hence, the present study aimed to estimate the pooled prevalence of IPIs among intellectually disabled individuals in Iran. Methods Using the PRISMA guidelines, we conducted a systematic review and meta-analysis of data retrieved from seven electronic databases (PubMed, Web of Science, Scopus, Embase, and ProQuest for English articles, as well as SID and Magiran for Persian) from their inception up to December 2020. Pooled prevalence was estimated using a random-effects model with a 95% confidence interval (CI) and depicted as a forest plot, while heterogeneity was evaluated using Cochran’s Q-test. Results Exactly 1263 of the 3004 intellectually disabled individuals examined by 14 studies across 10 provinces of Iran were positive for IPIs. Overall pooled prevalence estimate was 41% (95% CI 29–53%) with a range of 21% (95% CI 10–32%) to 68% (95% CI 55–80%) across sub-groups. Entamoeba coli (16.2%; 95% CI 10.3–22%), Blastocystis spp. (12.2%; 95% CI 7.2–17.2%), and Giardia duodenalis (11.9%; 95% CI 7.4–16.3%) were the most prevalent protozoan species. In terms of helminthic agents, the most prevalent species were Enterobius vermicularis (11.3%; 95% CI 6.3–16.3%) followed by Strongyloides stercoralis (10.9%; 95% CI 5.0–16.9%) and Hymenolepis nana (2.8%; 95% CI 0.4–5.2%) Conclusion IPIs are highly prevalent among intellectually disabled individuals in Iran. Improving the health status and implementing infectious disease prevention strategies in rehabilitation centers, health promotion interventions to improve personal hygiene of intellectually disabled individuals, as well as utilize sensitive diagnostic methods besides routine stool examination techniques, and treatment of infected individuals will help in the control of these infections among intellectually disabled individuals.

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A systematic review and meta-analysis of Hymenolepis nana in human and rodent hosts in Iran: A remaining public health concern

Cited by 11 publications

References 51 publications

Patterns of Gastrointestinal Helminth Infections in Rattus rattus, Rattus norvegicus, and Mus musculus in Chile

Patterns of Gastrointestinal Helminth Infections in Rattus rattus, Rattus norvegicus, and Mus musculus in Chile

Intestinal parasitic infections among patients referred to hospitals affiliated to Shiraz University of Medical Sciences, southern Iran: a retrospective study in pre- and post-COVID-19 pandemic

Intestinal parasites among intellectually disabled individuals in Iran: a systematic review and meta-analysis

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