Intestinal parasites among food handlers in Iran: A systematic review and meta-analysis

Teimouri, Aref; Keshavarz, Hossein; Mohtasebi, Sina; Goudarzi, Fatemeh; Mikaeili, Fattaneh; Borjian, Alireza; Allahmoradi, Mahya; Yimam, Yonas; Afshar, Mohammad Javad Abbaszadeh

doi:10.1016/j.fm.2020.103703

Cited by 10 publications

(13 citation statements)

References 32 publications

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“…The current study revealed a low prevalence of helminthic parasites compared to protozoan parasites (0.04% and 4.4%, respectively). These results were consistent with the previous studies that indicated a decreasing trend in intestinal helminth infections, while intestinal protozoa still have a high prevalence in various areas of Iran (Rokni 2008 ; Teimouri et al 2020 ; Abbaszadeh Afshar et al 2021 ). The high prevalence of protozoan parasites is possibly due to their high proliferation rate and the simple route of infection via contaminated foods and water (Abera et al 2010 ).…”

Section: Discussionsupporting

confidence: 93%

“…H. nana , E. vermicularis , and S. stercoralis were reported as the parasitic helminths in the present study. 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: Discussionsupporting

confidence: 90%

“…Blastocystis spp., E. coli, and G. intestinalis were the most prevalent intestinal parasites in the present study. These parasites have been reported almost in most studies on IPIs among different populations in Iran (Nasiri et al 2009;Barkhori Mahni et al 2016;Afshar et al 2020;Teimouri et al 2020;Abbaszadeh Afshar et al 2021;Mohebali et al 2021). The prevalence rate of Blastocystis spp.…”

Section: Discussionmentioning

confidence: 96%

“…In this study, the stool samples were examined microscopically using direct wet-mount for the diagnosis of IPIs in participants referred to hospitals affiliated to Shiraz University of Medical Sciences, and the use of one method for diagnosis of IPIs was the limitation of this study. The higher prevalence of IPIs has been reported in the studies which employed two or three diagnosis methods, such as concentration and staining methods besides direct wet-mount method, and the implementation of these methods together increases the sensitivity of IPI detection (Garcia et al 2017 ; Teimouri et al 2020 ). The main strength of this study is its novelty; to the best of the author’s knowledge, this is the first study on the prevalence of IPIs among outpatients and inpatients referred to hospitals affiliated to Shiraz University of Medical Sciences in the pre- and post-COVID-19 pandemic.…”

Section: Discussionmentioning

confidence: 99%

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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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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

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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“…Giardia is still considered the most-identified intestinal parasite in Iran, although its overall prevalence rates have dramatically decreased in recent years ( 18 – 20 ). The molecular characterization of the human G. duodenalis isolates in Iran was predominantly conducted using a single locus ( 21 – 26 ).…”

Section: Introductionmentioning

confidence: 99%

Multilocus sequence typing of Giardia duodenalis genotypes circulating in humans in a major metropolitan area

et al. 2022

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Giardia duodenalis is an intestinal protozoan parasite of humans and animal hosts and comprises eight microscopically indistinguishable molecularly-diverse lineages designated as assemblages A–H. Assemblages A and B are the primary sources of infections in humans and a wide range of mammals. Here, we identified assemblages, and inter-/intra-assemblage genetic diversity of human G. duodenalis isolates based on the multilocus sequence typing of the triosephosphate isomerase (tpi), β -giardin (bg), and glutamate dehydrogenase (gdh) loci. Multilocus sequence analysis of 62 microscopically-positive G. duodenalis fecal samples identified 26 (41.9%), 27 (43.5%), and nine (14.5%) isolates belonging to assemblages A, B, and discordant assemblages, respectively. The tpi locus assemblage-specific primers identified dual infections with A and B assemblages (45.2%). The sequence analysis of multiple alignments and phylogenetic analysis showed low genetic polymorphism in assemblage A isolates, classified as sub-assemblage AII at three loci, subtype A2 at tpi and gdh loci, and subtype A2 or A3 at bg locus. High genetic variations were found in assemblage B isolates with 14, 15, and 23 nucleotide patterns at tpi, bg, and gdh loci, respectively. Further concatenated sequence analysis revealed four multilocus genotypes (MLG) in 24 assemblages A isolates, two previously-identified (AII-1 and AII-5), with one novel multilocus genotype. However, the high genetic variations observed in assemblage B isolates among and within the three genetic loci prevented the definitive designation of specific MLGs for these isolates. Multilocus sequence typing may provide new insight into the genetic diversity of G. duodenalis isolates in Tehran, suggesting that humans are likely a potential source of G. duodenalis infection. Further host-specific experimental transmission studies are warranted to elucidate the modes of transmission within multiple host populations.

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Parasitological and histopathological features of appendectomy specimens in Fars Province, southern Iran: a retrospective study

Mohtasebi

Shokripour²,

Vahid³

et al. 2023

Annals of Medicine &Amp; Surgery

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Background: Although the appendix is the most commonly resected and examined intra-abdominal organ, the pathogenesis and etiology of acute nonspecific appendicitis remain enigmatic. This retrospective study aimed to assess the prevalence of parasitic infection in surgically removed appendices and to evaluate the probable associations between the presence of parasites and the occurrence of appendicitis through parasitological and histopathological examinations of the appendectomy specimens. Materials and methods: This retrospective study was carried out from April 2016 to March 2021 among all patients referred to hospitals affiliated with Shiraz University of Medical Sciences, Fars Province, Iran, for appendectomy. Patient information, including age, sex, year of appendectomy, and type of appendicitis, was collected from the available data in the hospital information system database. In positive cases, all pathology reports were retrospectively evaluated for the presence of the parasite and its type, and analytical and descriptive statistics were carried out using SPSS software version 22. Results: A total of 7628 appendectomy materials were evaluated in the present study. Of the total participants, 4528 (59.4%, 95% CI: 58.2–60.5) were males, and 3100 (40.6%, 95% CI: 39.5–41.8) were females. The mean age of participants was 23.87±14.28 years. Overall, Enterobius vermicularis was observed in 20 appendectomy specimens. Fourteen of these patients (70%) were less than 20 years old. Conclusion: This study indicated that E. vermicularis is one of the common infectious agents that could be found in the appendix and may increase the risk of appendicitis. Therefore, in terms of appendicitis, clinicians, and pathologists must be aware of the possible presence of parasitic agents, especially E. vermicularis, to treat and manage the patients sufficiently.

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Intestinal parasites among food handlers in Iran: A systematic review and meta-analysis

Cited by 10 publications

References 32 publications

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 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

Multilocus sequence typing of Giardia duodenalis genotypes circulating in humans in a major metropolitan area

Parasitological and histopathological features of appendectomy specimens in Fars Province, southern Iran: a retrospective study

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