中国血吸虫病防治杂志最新文献

{"title":"[Cost-effectiveness analysis of chemical treatment with drones for <i>Oncomelania hupensis</i> control in marshland and lake areas].","authors":"Y Chen, X Xu, D Wen, B Dai, L Gao, R Zhang, Q Huang, L Li, F Zha, L Fang, P Zhang, S Zhang, C Cao","doi":"10.16250/j.32.1915.2024128","DOIUrl":"https://doi.org/10.16250/j.32.1915.2024128","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Objective: &lt;/strong&gt;To evaluate the molluscicidal effect and cost of spraying molluscicides with drones against &lt;i&gt;Oncomelania hupensis&lt;/i&gt; snails in marshland and lake areas, so as to provide new insights into field snail control in China.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Methods: &lt;/strong&gt;A marshland and lake setting measuring approximately 12 000 m&lt;sup&gt;2&lt;/sup&gt; was selected in Wanzhi District, Wuhu City on June 2023 as the test field, and assigned to four groups, of 3 000 m&lt;sup&gt;2&lt;/sup&gt; in each group. Environmental cleaning was not conducted in groups A or B, which were given 5% niclosamide ethanolamine salt granules sprayed with knapsack-type sprayers and drones at a dose of 40 g/m&lt;sup&gt;2&lt;/sup&gt;, and environmental cleaning was conducted in groups C and D, which were given 5% niclosamide ethanolamine salt granules sprayed with drones and knapsack-type sprayers at a dose of 40 g/m&lt;sup&gt;2&lt;/sup&gt;, respectively. &lt;i&gt;O. hupensis&lt;/i&gt; snails were surveyed before chemical treatment and 1, 3, 5, 7, 14 days post-treatment. The uniformity of chemicals was determined on the day of treatment, and the snail mortality, corrected snail mortality and density of living snails were calculated and compared among groups. The cost of molluscicides, labor fees of environmental cleaning and chemical treatment and cost of equipment were calculated, and the cost for a 1% reduction in the mean density of living snails was calculated 14 days post-treatment.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;The mean densities of living snails and mortality rates of snails were 1.82 to 2.85 snails/0.1 m&lt;sup&gt;2&lt;/sup&gt; and 1.41% to 2.94% in groups A, B, C and D before chemical treatment, and the mortality and corrected mortality of snails were 55.75%, 49.32%, 85.94% and 87.50%, and 55.00%, 48.47%, 85.70% and 87.29% in groups A, B, C and D 14 days post-treatment. There was a significant difference in the mortality of snails among the four groups 14 days post-treatment (χ&lt;sup&gt;2&lt;/sup&gt; = 38.735, &lt;i&gt;P&lt;/i&gt; &lt; 0.005), and there was a higher snail mortality in Group D than in Group A (χ&lt;sup&gt;2&lt;/sup&gt; = 16.876, &lt;i&gt;P&lt;/i&gt; &lt; 0.005), and higher in Group C than in Group B (χ&lt;sup&gt;2&lt;/sup&gt; = 20.508, &lt;i&gt;P&lt;/i&gt; &lt; 0.005). The density of living snails reduced by 55.00%, 43.94%, 90.43% and 87.14% 14 days post-treatment relative to pre-treatment in groups A, B, C and D, respectively. The test for uniformity of chemicals showed that the mean dose of molluscicides were 57.34, 55.21, 40.19 g/m&lt;sup&gt;2&lt;/sup&gt; and 32.37 g/m&lt;sup&gt;2&lt;/sup&gt; in groups A, B, C and D, respectively, and the minimal standard deviation (7.07) and coefficient of variation (0.18) of mean doses were seen in Group C. The costs for chemical treatment were 0.33 Yuan in groups A and B and 1.53 Yuan in groups C and D, respectively. The costs for a 1% reduction in the mean density of living snails were 17.82, 22.47, 50.73 Yuan and 52.56 Yuan in groups A, B, C, and D 14 days post-treatment, respectively.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusions: &lt;/strong&gt;The molluscicidal effect and cost of spra","PeriodicalId":38874,"journal":{"name":"中国血吸虫病防治杂志","volume":"36 5","pages":"502-506"},"PeriodicalIF":0.0,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142773293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Epidemiological and spatial distribution characteristics of <i>Clonorchis sinensis</i> human infections in Guangdong Province from 2016 to 2022].","authors":"G Zhang, Q Zhang, Y Fang, F Pei, Q Mao, J Liu, Z Deng, D Wu, W Lu, J Liu, Y Liao, J Zhang, J Chen","doi":"10.16250/j.32.1374.2024097","DOIUrl":"10.16250/j.32.1374.2024097","url":null,"abstract":"<p><strong>Objective: </strong>To investigate the epidemiological characteristics and spatial distribution characteristics of <i>Clonorchis sinensis</i> human infections in Guangdong Province from 2016 to 2022, so as to provide insights into formulation of the clonorchiasis control measures in the province.</p><p><strong>Methods: </strong>Xinhui District of Jiangmen City, Longmen County of Huizhou City and Wengyuan County of Shaoguan City in Guangdong Province were selected as fixed surveillance sites for human clonorchiasis from 2016 to 2022, and additional 10% to 15% counties (districts) endemic for clonorchiasis were sampled from Guangdong Province as mobile surveillance sites each year from 2016 to 2022. A village (community) was randomly selected from each surveillance site according to the geographical orientations of east, west, south, north and middle, and subjects were randomly sampled from each village (community). <i>C. sinensis</i> eggs were detected in subjects' stool samples using the Kato-Katz technique, and the prevalence and intensity of <i>C. sinensis</i> infections were calculated. In addition, subjects' gender, age, ethnicity, educational level and occupation were collected. The Guangdong Provincial 1:1 million electronic map in vector format was downloaded from the National Geomatics Center of China, and kernel density analysis and spatial autocorrelation analysis of <i>C. sinensis</i> human infections in Guangdong Province from 2016 to 2022 were performed using the software ArcGIS 10.7.</p><p><strong>Results: </strong>A total of 153 188 residents were tested for <i>C. sinensis</i> infections in Guangdong Province from 2016 to 2022, including 75 596 men (49.35%) and 77 592 women (50.65%), and there were 5 369 residents infected with <i>C. sinensis</i>, with 3.50% overall prevalence of infections. The prevalence rates of severe, moderate and mild <i>C. sinensis</i> infections were 0.76%, 7.26% and 91.97% among <i>C. sinensis</i>-infected residents in Guangdong Province from 2016 to 2022, and there were age-, gender-, ethnicity-, occupation- and educational level-specific prevalence of <i>C. sinensis</i> human infections (χ² = 2 578.31, 637.33, 52.22, 2 893.28 and 1 139.33, all <i>P</i> values < 0.05). Global spatial autocorrelation analysis showed a cluster in the prevalence of <i>C. sinensis</i> human infections in Guangdong Province (Moran's <i>I</i> = 0.63, <i>Z</i> = 27.31, <i>P</i> < 0.05). Kernel density analysis showed that the prevalence of <i>C. sinensis</i> human infections with a high kernel density in Guangdong Province was mainly distributed along the Zhujiang River basin in Pearl River Delta areas, followed by in eastern and northern Guangdong Province. In addition, local spatial autocorrelation analysis identified 73 high-high clusters of the prevalence of <i>C. sinensis</i> human infections in Guangdong Province.</p><p><strong>Conclusions: </strong>The prevalence of <i>C. sinensis</i> human infection","PeriodicalId":38874,"journal":{"name":"中国血吸虫病防治杂志","volume":"36 6","pages":"584-590"},"PeriodicalIF":0.0,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143013043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Trends in areas of <i>Oncomelania hupensis</i> snail habitats in Anhui Province from 2004 to 2023 based on the Mann-Kendall test].","authors":"F Gao, S Zhang, S Ding, X Xu, T Wang, B Dai","doi":"10.16250/j.32.1915.2024053","DOIUrl":"https://doi.org/10.16250/j.32.1915.2024053","url":null,"abstract":"<p><strong>Objective: </strong>To investigate the trends in areas of <i>Oncomelania hupensis</i> snail habitats in Anhui Province from 2004 to 2023, so as to provide insights into facilitating the progress of schistosomiasis elimination in the province.</p><p><strong>Methods: </strong>Areas of <i>O. hupensis</i> snail habitats in Anhui Province from 2004 to 2023 were collected, and the trends in and mutations of <i>O. hupensis</i> snail habitats in Anhui Province, and the trends in <i>O. hupensis</i> snail habitats in different types of schistosomiasis-endemic foci and in different cities of Anhui Province from 2004 to 2023 were analyzed using Mann-Kendall test.</p><p><strong>Results: </strong>The areas of <i>O. hupensis</i> snail habitats reduced by 12.62% in Anhui Province in 2023 relative to in 2004. Mann-Kendall trend test showed that the areas of <i>O. hupensis</i> snail habitats appeared a tendency towards a decline in Anhui Province from 2004 to 2023 (<i>Z</i> = -3.926, <i>P</i> < 0.001, β = -215.66), with an annual average reduction of 215.66 hm². Mann-Kendall mutation test showed that the areas of <i>O. hupensis</i> snail habitats appeared a tendency towards a decline in Anhui Province since 2015 (|<i>Z</i>| > <i>U</i>_0.05, <i>P</i> < 0.05). The areas of <i>O. hupensis</i> snail habitats appeared a tendency towards a decline in marshland and lake regions (<i>Z</i> = -4.899, <i>P</i> < 0.001, β = -260.13), and a tendency towards a rise in hilly regions of Anhui Province from 2004 to 2023 (<i>Z</i> = 2.758, <i>P</i> < 0.01, β = 44.55). Among 9 cities endemic for schistosomiasis in Anhui Province, the areas of <i>O. hupensis</i> snail habitats appeared a tendency towards a decline in 5 cities of Ma'anshan, Tongling, Anqing, Huangshan and Chizhou (<i>Z</i> = -4.056 to -2.109, all <i>P</i> values < 0.05, β = -92.12 to -0.45). The average constituent ratios of areas of <i>O. hupensis</i> snail habitats were 88.19% and 11.81% in marshland and lake regions and hilly regions of Anhui Province from 2004 to 2023, respectively, and the ratio of areas of <i>O. hupensis</i> snail habitats in marshland and lake regions to areas of snail habitats in hilly regions reduced from 9.23∶1 in 2004 to 5.74∶1 in 2023 in Anhui Province, with the ratio appearing a tendency towards a decline (<i>Z</i> = -4.477, <i>P</i> < 0.001, β = -0.16).</p><p><strong>Conclusions: </strong>The areas of <i>O. hupensis</i> snail habitats appeared a tendency towards a decline in Anhui Province from 2004 to 2023, with a reduction in areas of <i>O. hupensis</i> snail habitats in marshland and lake regions and a rise in hilly regions. Targeted <i>O. hupensis</i> snail control interventions are required tailored to real snail status.</p>","PeriodicalId":38874,"journal":{"name":"中国血吸虫病防治杂志","volume":"36 5","pages":"460-465"},"PeriodicalIF":0.0,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142773251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Knowledge, attitudes and practices towards scrub typhus control and associated influencing factors among residents in Longling County, Yunnan Province in 2023].","authors":"Y Zhou, S Yang, Y Yang, Y He, S Yuan, Z Chen, T Ren","doi":"10.16250/j.32.1374.2023251","DOIUrl":"https://doi.org/10.16250/j.32.1374.2023251","url":null,"abstract":"<p><strong>Objective: </strong>To investigate the knowledge, attitudes and practices (KAP) towards scrub typhus control and analyse the influencing factors among residents in Longling County, Yunnan Province in 2023, so as to provide insights into management of scrub typhus in the county.</p><p><strong>Methods: </strong>Two townships were randomly sampled from Longling County, Baoshan City, Yunnan Province in July 2023, and 2 to 3 administrative villages were randomly selected from each township. Then, 20 to 40 households were randomly selected from each village, and 1 to 2 villagers were surveyed in each household. Residents' KAP towards scrub typhus control was investigated, and factor affecting residents' KAP towards scrub typhus control were identified with independent samples <i>t</i> test or analysis of variance (ANOVA) and multiple linear regression analysis.</p><p><strong>Results: </strong>A total of 417 questionnaires were allocated, and 410 valid questionnaires were recovered, with an effective recovery rate of 98.32%. Of all respondents, 65.85% (270/410) heard of scrub typhus but were not familiar with it, and 12.68% (52/410) and 1.95% (8/410) were familiar and very familiar with it, respectively. Residents mainly acquired scrub typhus control knowledge via their relatives and friends. The knowledge, attitude, and behavior scores of the respondents with regard to scrub typhus were (34.14 ± 13.07), (55.04 ± 6.69), and (21.40 ± 5.61), respectively, and the total score for knowledge, belief, and behavior in relation to scrub typhus prevention and control was (110.57 ± 18.80). Univariate analysis revealed that age (<i>F</i> = 3.12, <i>P</i> < 0.05), education (<i>F</i> = 10.77, <i>P</i> < 0.05), occupation (<i>F</i> = 4.89, <i>P</i> < 0.05), frequency of outdoor activities (<i>F</i> = 3.61, <i>P</i> < 0.05), and type of place of residence (<i>t</i> = 1.33, <i>P</i> < 0.05) were the factors that influenced the participants' scores for knowledge of the prevention and control of scrub typhus. Multiple linear regression analysis revealed that literacy level (β = 10.20 to 16.71, <i>P</i> < 0.05) and category of residence (β = -7.23, <i>P</i> < 0.05) were the factors that influenced residents' current knowledge and trust behavior in relation to scrub typhus.</p><p><strong>Conclusions: </strong>Place of residence and educational level are critical factors affecting scrub typhus control among residents in Longling County, Yunnan Province. Intensified health education pertaining to scrub typhus control and appropriate behavioral interventions are required among residents living in urban areas, with a low educational level and frequent outdoor activities.</p>","PeriodicalId":38874,"journal":{"name":"中国血吸虫病防治杂志","volume":"36 5","pages":"507-513"},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142773228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[First overseas imported case of schistosomiasis haematobia in Xihu District, Hangzhou City].","authors":"H Zhang, X Su, J Zhang, Y Zhang","doi":"10.16250/j.32.1374.2023236","DOIUrl":"10.16250/j.32.1374.2023236","url":null,"abstract":"<p><p>This paper reports the diagnosis and treatment of the first imported case of schistosomiasis haematobia in Xihu District of Hangzhou. The patient was an international student from Zimbabwe, and experienced repeated gross hematuria without obvious motivation. Cystoscopy displayed bladder masses, and a large number of fresh or calcified parasite eggs were found in pathological sections. In addition, urine microscopy identified <i>Schistosoma haematobium</i> eggs. The case was therefore definitively diagnosed as overseas imported case of imported schistosomiasis haematobia. Another case of schistosomiasis mansoni was identified among international students in the same school with the patient above by indirect haemagglutination test and urine and stool etiology examination. It is recommended to intensify health education and monitoring among overseas floating populations and improve the diagnostic skills of overseas imported schistosomiasis among professionals working in medical and disease control and prevention institutions, in order to prevent misdiagnosis and mistreatment.</p>","PeriodicalId":38874,"journal":{"name":"中国血吸虫病防治杂志","volume":"36 5","pages":"548-550"},"PeriodicalIF":0.0,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142773221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Toxicity and sublethal effects of calcium cyanamide against susceptible strains of <i>Aedes albopictus</i>].","authors":"L Zheng, H Xu, Q Wen, N Zhou, X Zheng","doi":"10.16250/j.32.1374.2024087","DOIUrl":"https://doi.org/10.16250/j.32.1374.2024087","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Objective: &lt;/strong&gt;To examine the toxicity and sublethal effects of calcium cyanamide against susceptible isolates of &lt;i&gt;Aedes albopictus&lt;/i&gt;, so as to provide insights into rational use of calcium cyanamide for integrated management of &lt;i&gt;Ae. albopictus&lt;/i&gt;.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Methods: &lt;/strong&gt;The sublethal concentrations [30% lethal concentration (LC&lt;sub&gt;30&lt;/sub&gt;) and median lethal concentration (LC&lt;sub&gt;50&lt;/sub&gt;)] of calcium cyana mide against susceptible strains of &lt;i&gt;Ae. albopictus&lt;/i&gt; were determined using the larval immersion test. With 100 mL of dechlorinated water as the control group, after the larvae of susceptible strains of &lt;i&gt;Ae. albopictus&lt;/i&gt; were immersed in calcium cyanamide for 24 hours, the pupation rate, pupation duration, emergence rate, number of eggs laid, percentage of eggs hatched, and lifespan of &lt;i&gt;Ae. albopictus&lt;/i&gt; were calculated and compared post-treatment with calcium cyanamide at different sublethal concentrations. The midgut tissues of larvae of susceptible strains of &lt;i&gt;Ae. albopictus&lt;/i&gt; treated with 100 mg/L calcium cyanamide were sampled for pathological sectioning to observe midgut tissue damages. To evaluate the residual activity, 100 larvae of susceptible strains of &lt;i&gt;Ae. albopictus&lt;/i&gt; were treated with 200 mg/L and 500 mg/L calcium cyanamide, and the mortality of larvae was calculated every 24 hour, with dead larvae replaced until no larval death.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;The regression equation for the toxicity of calcium cyanamide against larvae of susceptible strains of &lt;i&gt;Ae. albopictus&lt;/i&gt; was &lt;i&gt;y&lt;/i&gt; = -9.441 + 4.657&lt;i&gt;x&lt;/i&gt;, with an LC&lt;sub&gt;50&lt;/sub&gt; of 106.42 mg/L [95% confidence interval (&lt;i&gt;CI&lt;/i&gt;): (94.64, 118.36) mg/L] and an LC&lt;sub&gt;30&lt;/sub&gt; of 82.17 mg/L [95% &lt;i&gt;CI&lt;/i&gt;: (94.64, 118.36) mg/L], respectively. After larvae of susceptible strains of &lt;i&gt;Ae. albopictus&lt;/i&gt; were treated with sublethal concentrations (LC&lt;sub&gt;30&lt;/sub&gt; and LC&lt;sub&gt;50&lt;/sub&gt;) of calcium cyanamide for 24 hours, there were reduced pupation and emergence rates of larvae (all &lt;i&gt;P&lt;/i&gt; values &lt; 0.000 1), prolonged pupal stage (both &lt;i&gt;P&lt;/i&gt; values &lt; 0.000 1), reduced numbers of eggs laid by survival female &lt;i&gt;Ae. albopictus&lt;/i&gt; (both &lt;i&gt;P&lt;/i&gt; values &lt; 0.000 1), reduced percentages of eggs hatched by &lt;i&gt;Ae. albopictus&lt;/i&gt; eggs (both &lt;i&gt;P&lt;/i&gt; values &lt; 0.000 1), and reduced median survival period of survival female &lt;i&gt;Ae. albopictus&lt;/i&gt; (χ&lt;sup&gt;2&lt;/sup&gt; = 9.36 and 20.33, both &lt;i&gt;P&lt;/i&gt; values &lt; 0.01) in the LC&lt;sub&gt;30&lt;/sub&gt; and LC&lt;sub&gt;50&lt;/sub&gt; groups relative to the control group. There was a numerical decline in the median survival period of survival female &lt;i&gt;Ae. albopictus&lt;/i&gt; in the LC&lt;sub&gt;30&lt;/sub&gt; groups relative to the control group (χ&lt;sup&gt;2&lt;/sup&gt; = 2.42, &lt;i&gt;P&lt;/i&gt; &gt; 0.05), and there was a significant decline in the median survival period of survival female &lt;i&gt;Ae. albopictus&lt;/i&gt; in the LC&lt;sub&gt;50&lt;/sub&gt; group relative to the control group (χ&lt;sup&gt;2&lt;/sup&gt; = 11.42, &lt;i&gt;P&lt;/i&gt; &lt; 0.01). Histopathological examinations showe","PeriodicalId":38874,"journal":{"name":"中国血吸虫病防治杂志","volume":"37 2","pages":"196-200"},"PeriodicalIF":0.0,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144162755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Progress of researches on toxoplasmosis vaccines based on the CRISPR/Cas9 technology].","authors":"Y Wu, X Zhang, J Li, J Xie, L Wang, H Sun","doi":"10.16250/j.32.1374.2024026","DOIUrl":"https://doi.org/10.16250/j.32.1374.2024026","url":null,"abstract":"<p><p><i>Toxoplasma gondii</i> is an obligatory intracellular parasite which infects a variety of warm-blooded animals and causes toxoplasmosis. Toxoplasmosis seriously endangers human health and animal husbandry production. As one of the effective gene editing tools, the clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated proteins (Cas) system has been widely used for knockout of genes in <i>T. gondii</i>. This review summarizes the applications of the CRISPR/Cas9 technology in vaccines against single- and double-gene deletion strains of <i>T. gondii</i>, so as to provide insights into development of toxoplasmosis vaccines.</p>","PeriodicalId":38874,"journal":{"name":"中国血吸虫病防治杂志","volume":"36 5","pages":"542-547"},"PeriodicalIF":0.0,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142773248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Application of machine learning models in schistosomiasis control: a review].","authors":"Y Zhou, Y Tong, Y Zhou","doi":"10.16250/j.32.1374.2024138","DOIUrl":"https://doi.org/10.16250/j.32.1374.2024138","url":null,"abstract":"<p><p>Schistosomiasis is a major public health concern in the world, and precision control is crucial to combating this disease. Due to the complex and diverse transmission route of schistosomiasis, conventional statistical models have significant limitations for precision control of schistosomiasis. As an important branch of artificial intelligence, machine learning has shown remarkable advantages in schistosomiasis control and research. It has been shown that machine learning is highly effective for disease prediction and risk assessment, so as to optimize the disease control strategy and resource allocation and achieve the precision control target. This review summarizes the characteristics of machine learning models and their applications in the research of intermediate host snails and schistosomiasis.</p>","PeriodicalId":38874,"journal":{"name":"中国血吸虫病防治杂志","volume":"36 5","pages":"535-541"},"PeriodicalIF":0.0,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142773291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Risk assessment of human <i>Spirometra mansoni</i> infections and cross-sectional study on knowledge, attitude and practice towards sparganosis in endemic areas of Henan Province].","authors":"Y Zhang, T Jiang, X Ma, Y Deng, W Chen, Y Zhu, Z Tang, X Lin, H Zhang","doi":"10.16250/j.32.1374.2024096","DOIUrl":"https://doi.org/10.16250/j.32.1374.2024096","url":null,"abstract":"<p><strong>Objective: </strong>To assess the risk of human <i>Spirometra mansoni</i> infections and investigate the knowledge, attitude and practice (KAP) towards sparganosis mansoni among residents in Henan Province, so as to provide insights into formulation of the sparganosis mansoni control measures.</p><p><strong>Methods: </strong>Qinling Village in Fugou County of Zhoukou City, Bali Village in Yancheng District of Luohe City, Duzhai Village in Puyang County of Puyang City and Doushan Village in Luoshan County of Xinyang City were sampled as survey sites in Henan Province from July to August 2023, and more than 40 frogs were sampled from ponds or streams in each survey site for detection of <i>Sparganum mansoni</i> infections. At least 150 residents were sampled using a cluster sampling method from each survey site, and the sero-prevalence of anti-<i>S. mansoni</i> IgG antibody was estimated. In addition, a questionnaire survey was conducted on the KAP towards sparganosis mansoni among participants, and the proportion of eligible KAP, rate of correct KAP and KAP scores were calculated.</p><p><strong>Results: </strong>A total 229 frogs were collected from 4 survey sites in 2023, and the overall prevalence of <i>S. mansoni</i> infection was 4.37% (10/229) in frogs, with 7.75% (10/129) prevalence in wild frogs and 0 in farm-bred frogs. A questionnaire survey was performed among 649 residents sampled from 4 survey sites, and 649 serum samples were collected. The seroprevalence of anti-<i>S.mansoni</i> IgG antibody was 0.15% (1/649) and the overall proportion of eligible KAP was 23.73% (154/649) among participants. There were age- (χ² = 30.905, <i>P</i> = 0.000), educational level- (χ² = 41.011, <i>P</i> = 0.000), and occupation-specific proportions of eligible KAP among participants (χ² = 10.721, <i>P</i> = 0.005), and the proportion of eligible KAP decreased with age (χ² _trend = 22.717, <i>P</i> = 0.000) and increased with education levels (χ² _trend = 40.025, <i>P</i> = 0.000). The rates of correct KAP towards sparganosis mansoni were 40.81% (2 119/5 192), 96.66% (1 882/1 947) and 63.81% (3 727/5 841) (χ² = 1 913.731, <i>P</i> = 0.000) among residents, respectively. The rates of correct KAP towards sparganosis mansoni varied significantly among survey sites (χ² = 136.872, 42.347 and 255.157; all <i>P</i> values= 0.000, with the highest rate of correct knowledge (51.94%, 748/1 440) and practices (75.86%, 1 229/1 620) in Yancheng District of Luohe City and the highest rate of correct attitudes in Puyang County of Puyang City (99.11%, 446/450) (all <i>P</i> values< 0.05).</p><p><strong>Conclusions: </strong>There is still a high transmission risk of sparganosis mansoni in Henan Province, and the KAP towards sparganosis mansoni is required to be improved among residents.</p>","PeriodicalId":38874,"journal":{"name":"中国血吸虫病防治杂志","volume":"37 2","pages":"190-195"},"PeriodicalIF":0.0,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144162753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Molluscicidal effect of spraying different formulations of niclosamide ethanolamine salt with drones against <i>Oncomelania hupensis</i> in ditches].","authors":"Z Zhu, X Zhang, J He, Y Chen, W Wang, H Hu, C Cao, Z Bao, S Guo, L Duan, Y Yuan, J Xu, S Li, X Zhou","doi":"10.16250/j.32.1374.2024003","DOIUrl":"https://doi.org/10.16250/j.32.1374.2024003","url":null,"abstract":"<p><strong>Objective: </strong>To evaluate the molluscicidal effect of spraying different formulations of niclosamide ethanolamine salt with drones against <i>Oncomelania hupensis</i> in ditches.</p><p><strong>Methods: </strong>A semi-dry and semi-wet ditch with <i>O. hupensis</i> snails was selected in the second branch field of Jiangbei Farm, Jiangling County, Hubei Province in May 2023, and divided into 4 experimental areas, named groups A1, A2, B1 and B2. Environmental cleaning was performed in groups A1 and B2, and was not conducted in groups A2 or B2. Then, 50% wettable powder of niclosamide ethanolamine salt was sprayed with drones at an effective dose of 2 g/m² in groups A1 and A2, and 5% niclosamide ethanolamine salt granule was sprayed with drones at an effective dose of 2 g/m² in groups B1 and B2. <i>O. hupensis</i> snails were surveyed using the systematic sampling method 1, 3, 5, 7, 14 days after spraying, and the natural mortality and corrected mortality of <i>O. hupensis</i> snails were calculated.</p><p><strong>Results: </strong>The occurrence of frames with living snails, mean density of living snails and natural mortality of snails were 97.50% (117/120), 6.30 snails/0.1 m² and 1.18% (9/765) in the test ditch before spraying, respectively. There were significant differences in the mortality of snails among four groups 1, 3, 5, 7 and 14 days after spraying niclosamide formulations with drones (χ² = 17.230, 51.707, 65.184, 204.050 and 34.435, all <i>P</i> values < 0.01). The overall mortality rates of snails were 94.51% (1 051/1 112), 79.44% (908/1 143), 96.54% (977/1 012) and 88.55% (1 021/1 153) in groups A1, A2, B1 and B2 (χ² = 207.773, <i>P</i> < 0.05), respectively. In addition, there was no significant difference in the overall snail mortality between groups A1 and B1 (<i>P</i> > 0.05), and the snail mortality in groups A1 and B1 were both statistically different from that in groups A2 and B2 (all <i>P</i> values < 0.05).</p><p><strong>Conclusions: </strong>Both 50% wettlable powder of niclosamide ethanolamine salt and 5% niclosamide ethanolamine salt granule sprayed with drones are active against <i>O. hupensis</i> snails in ditches, and environmental cleaning may improve the molluscicidal effect.</p>","PeriodicalId":38874,"journal":{"name":"中国血吸虫病防治杂志","volume":"36 5","pages":"527-530"},"PeriodicalIF":0.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142773244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}