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Co-positivity of anti-dengue virus and anti-Japanese encephalitis virus IgM in endemic area:co-infection or cross reactivity?
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作者 Kaleshwar Prasad Singh Gitika Mishra +9 位作者 Parul Jain Nidhi Pandey Rachna Nagar Shikha Gupta Shantanu Prakash Om Prakash Danish Nasar Khan Sakshi Shrivastav Desh Deepak Singh Amita Jain 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2014年第2期124-129,共6页
Objective:To report high co-positivity of anti-dengue virus(DV)and anti-Japanese encephalitis virus(JEV)IgM in an area endemic for both the viruses and to discuss the possibilities of coinfection.Methods:Serum samples... Objective:To report high co-positivity of anti-dengue virus(DV)and anti-Japanese encephalitis virus(JEV)IgM in an area endemic for both the viruses and to discuss the possibilities of coinfection.Methods:Serum samples from the patients who presented with fever,suspected central nervous system infection and thrombocytopenia,were tested for anti-DV IgM and antiJEV IgM antibodies.Conventional reverse transcriptase polymerase chain reaction was done for detection of DV RNA and JEV RNA.Results:Of 1 410 patient sera tested for anti-DV and antiJEV antibodies,129(9.14%)were co-positive for both.This co-positivity was observed only in those months when anli-JEV IgM positivily was high.Tilers of both anli-DV IgM and anti-JEV IgM were high in most of the co-positive eases.Among these 129 co-positive cases,76 were lesled by conventional reverse Iranscriplase polymerase chain reaction for both flaviviruses,of which eight cases were co-positive for DV and JEV.Conclusions:Co-infection with more than one fluvivirus species can occur in hyperendemic areas. 展开更多
关键词 CO-INFECTION co-circulation Dengue VIRUS IGM Japanese ENCEPHALITIS VIRUS Reverse transcriptase polymerase chain reaction
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The dengue preface to endemic in China's Mainland:the historical largest outbreak by Aedes albopictus in Guangzhou,2014 被引量:3
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作者 Lei Luo Li-Yun Jiang +7 位作者 Xin-Cai Xiao Biao Di Qin-Long Jing Sheng-Yong Wang Jin-Ling Tang Ming Wang Xiao-Ping Tang Zhi-Cong Yang 《Infectious Diseases of Poverty》 SCIE 2017年第1期1313-1323,共11页
Background:Dengue was regarded as a mild epidemic in China's Mainland transmitted by Aedes albopictus.However,the 2014 record-breaking outbreak in Guangzhou could change the situation.In order to provide an early ... Background:Dengue was regarded as a mild epidemic in China's Mainland transmitted by Aedes albopictus.However,the 2014 record-breaking outbreak in Guangzhou could change the situation.In order to provide an early warning of epidemic trends and provide evidence for prevention and control strategies,we seek to characterize the 2014 outbreak through application of detailed cases and entomological data,as well as phylogenetic analysis of viral envelope(E)gene.Methods:We used case survey data identified through the Notifiable Infectious Disease Report System,entomological surveillance and population serosurvey,along with laboratory testing for IgM/IgG,NS1,and isolation of viral samples followed by E gene sequencing and phylogenetic analysis to examine the epidemiological and molecular characteristics of the outbreak.Results:The 2014 dengue outbreak in Guangzhou accounted for nearly 80%of total reported cases that year in China's Mainland;a total of 37,376 cases including 37,340 indigenous cases with incidence rate 2908.3 per million and 36 imported cases were reported in Guangzhou,with 14,055 hospitalized and 5 deaths.The epidemic lasted for 193 days from June 11 to December 21,with the highest incidence observed in domestic workers,the unemployed and retirees.The inapparent infection rate was 18.00%(135/750).In total,96 dengue virus 1(DENV-1)and 11 dengue virus 2(DENV-2)strains were isolated.Phylogenetic analysis indicated that the DENV-1 strains were divided into genotype I and V,similar to the strains isolated in Guangzhou and Dongguan in 2013.The DENV-2 strains isolated were similar to those imported from Thailand on May 11 in 2014 and that imported from Indonesia in 2012.Conclusions:The 2014 dengue epidemic was confirmed to be the first co-circulation of DENV-1 and DENV-2 in Guangzhou.The DENV-1 strain was endemic,while the DENV-2 strain was imported,being efficiently transmitted by the Aedes albopictus vector species at levels as high as Aedes aegypti. 展开更多
关键词 DENGUE co-circulation Dengue virus-1 Dengue virus-2 Endemic disease
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