Background:Cystic echinococcosis(CE),caused by the larval stage of the complex Echinococcus granulosus sensu lato(s.l.),is a zoonotic parasitic disease with a high social burden in China.E.ortleppi is a species(former...Background:Cystic echinococcosis(CE),caused by the larval stage of the complex Echinococcus granulosus sensu lato(s.l.),is a zoonotic parasitic disease with a high social burden in China.E.ortleppi is a species(formerly genotype 5 of E.granulosus s.l.)with unique epidemic areas(tropical areas),transmission patterns(mainly cattle origin),and pathological characteristics(large and small hook lengths)compared to other species that cause CE.A 19-year-old female patient in an area with no history of echinococcosis in Guizhou Province,China,was diagnosed with E.ortleppi infection in 2019.This study is to understand the source of this human E.ortleppi infection.Methods:We performed computer tomography(CT)scans,surgical operation,morphological sectioning,molecular diagnosis,phylogenetic analyses,and epidemiological investigation in Anshun City,Guizhou Province,China in 2019.Results:The patient presented with intermittent distension and pain in the upper abdomen without other abnormal symptoms.Routine blood examination results were normal.However,abdominal CT revealed a fertile cyst with a diameter of approximately 8 cm,uniform density,and a clear boundary,but without an evident cyst wall in the right lobe of the liver.The cyst was fertile,and phylogenetic analyses revealed that the isolates represented a new E.ortleppi genus haplotype.A result of 10‒14 years incubation period with indigenous infection was considered available for the case through the epidemiological survey.Conclusions:CE due to E.ortleppi infection can be confused with other diseases causing liver cysts,resulting in misdiagnosis.A transmission chain of E.ortleppi may exist or existed in the past in the previously considered nonendemic areas of echinococcosis in southwestern China.展开更多
Summary What is already known about this topic?Echinococcosis,also known as hydatid disease,is a zoonotic parasitic disease caused by the larvae of Echinococcus granulosus.Western China has one of the most severe epid...Summary What is already known about this topic?Echinococcosis,also known as hydatid disease,is a zoonotic parasitic disease caused by the larvae of Echinococcus granulosus.Western China has one of the most severe epidemics worldwide.Echinococcosis is endemic in 370 counties of 9 provincial-level administrative divisions(PLADs)including Inner Mongolia,Sichuan,Yunnan,Tibet,Shaanxi,Gansu,Qinghai,Ningxia,Xinjiang and Xinjiang Production and Construction Corps(XPCC).展开更多
Summary What is already known about this topic?Echinococcosis is a serious zoonotic parasitic disease that predominantly infects humans;domestic animals like cattle or sheep;as well as wild animals such as small roden...Summary What is already known about this topic?Echinococcosis is a serious zoonotic parasitic disease that predominantly infects humans;domestic animals like cattle or sheep;as well as wild animals such as small rodents.To date,there is a lack of comprehensive information about all potential environmental transmission routes for Echinococcus.What is added by this report?This study assesses the importance of under-researched environmental factors for the transmission of Echinococcus.It concludes that hand hygiene is an important factor in the robust environmental transmission of Echinococcus granulosus.What are the implications for public health practice?This study suggests that residents are at risk of catching echinococcosis through hand-oral transmission routes.Health education given to local residents is thus a key intervention,as well as avoiding close contact with dogs and ensuring proper hand-washing practices are followed.展开更多
文摘Background:Cystic echinococcosis(CE),caused by the larval stage of the complex Echinococcus granulosus sensu lato(s.l.),is a zoonotic parasitic disease with a high social burden in China.E.ortleppi is a species(formerly genotype 5 of E.granulosus s.l.)with unique epidemic areas(tropical areas),transmission patterns(mainly cattle origin),and pathological characteristics(large and small hook lengths)compared to other species that cause CE.A 19-year-old female patient in an area with no history of echinococcosis in Guizhou Province,China,was diagnosed with E.ortleppi infection in 2019.This study is to understand the source of this human E.ortleppi infection.Methods:We performed computer tomography(CT)scans,surgical operation,morphological sectioning,molecular diagnosis,phylogenetic analyses,and epidemiological investigation in Anshun City,Guizhou Province,China in 2019.Results:The patient presented with intermittent distension and pain in the upper abdomen without other abnormal symptoms.Routine blood examination results were normal.However,abdominal CT revealed a fertile cyst with a diameter of approximately 8 cm,uniform density,and a clear boundary,but without an evident cyst wall in the right lobe of the liver.The cyst was fertile,and phylogenetic analyses revealed that the isolates represented a new E.ortleppi genus haplotype.A result of 10‒14 years incubation period with indigenous infection was considered available for the case through the epidemiological survey.Conclusions:CE due to E.ortleppi infection can be confused with other diseases causing liver cysts,resulting in misdiagnosis.A transmission chain of E.ortleppi may exist or existed in the past in the previously considered nonendemic areas of echinococcosis in southwestern China.
文摘Summary What is already known about this topic?Echinococcosis,also known as hydatid disease,is a zoonotic parasitic disease caused by the larvae of Echinococcus granulosus.Western China has one of the most severe epidemics worldwide.Echinococcosis is endemic in 370 counties of 9 provincial-level administrative divisions(PLADs)including Inner Mongolia,Sichuan,Yunnan,Tibet,Shaanxi,Gansu,Qinghai,Ningxia,Xinjiang and Xinjiang Production and Construction Corps(XPCC).
基金National Key Research and Development Program of China(No.2021YFC2300800,2021YFC 2300804).
文摘Summary What is already known about this topic?Echinococcosis is a serious zoonotic parasitic disease that predominantly infects humans;domestic animals like cattle or sheep;as well as wild animals such as small rodents.To date,there is a lack of comprehensive information about all potential environmental transmission routes for Echinococcus.What is added by this report?This study assesses the importance of under-researched environmental factors for the transmission of Echinococcus.It concludes that hand hygiene is an important factor in the robust environmental transmission of Echinococcus granulosus.What are the implications for public health practice?This study suggests that residents are at risk of catching echinococcosis through hand-oral transmission routes.Health education given to local residents is thus a key intervention,as well as avoiding close contact with dogs and ensuring proper hand-washing practices are followed.
