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Issue of Virologica Sinica
Over the past few years, a rising trend of emerging and virulent infectious diseases has been observed. Among the emerging viral infections, more than 75% are natural focal diseases. Natural focal viruses generally recycle in wild animals with relatively large populations as natural hosts, such as bats, rodents, and birds, and are transmitted by vectors such as ticks and mosquitoes that co-exist in the specific natural foci. A program for investigating the main natural hosts and vectors in China has been implemented from 2013 to 2017, which involves a team of researchers across twelve institutions in Xinjiang, Qinghai, Hubei, and Yunnan regions. This special issue collectively presents the interesting results generated from this program. We hope these articles will allow the readers to obtain a better understanding of the importance of investigating pathogen profiles in natural hosts and vectors, and to consider the potential risk of unknown pathogens to the public health. The cover is a gallery of photos which were captured by the team during the field investigation.
Article List:
Over the past few years, a rising trend of emerging and virulent infectious diseases has been observed. Among the emerging viral infections, more than 75% are natural focal diseases. Natural focal viruses generally recycle in wild animals with relatively large populations as natural hosts, such as ..., Abstract
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Mosquitoes are classified into approximately 3500 species and further grouped into 41 genera. Epidemiologically, they are considered to be among the most important disease vectors in the world and they can harbor a wide variety of viruses. Several mosquito viruses are considered to be of ..., Abstract
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Ticks are important vectors for the transmission of pathogens including viruses. The viruses carried by ticks also known as tick-borne viruses (TBVs), contain a large group of viruses with diverse genetic properties and are concluded in two orders, nine families, and at least 12 genera. Some ..., Abstract
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Research Article
Hepatitis E virus (HEV) is the prototype of the family Hepeviridae and the causative agent of common acute viral hepatitis. Genetically diverse HEV-related viruses have been detected in a variety of mammals and some of them may have zoonotic potential. In this study, we tested 278 ..., Abstract
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Research Article
Vast viruses are thought to be associated with mosquitoes. Anopheles sinensis, Armigeres subalbatus, Culex quinquefasciatus, and Culex tritaeniorhynchus are very common mosquito species in China, and whether the virome structure in each species is species-specific has not been ..., Abstract
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Research Article
The Crimean-Congo hemorrhagic fever virus (CCHFV), a member of the genus Orthonairovirus and family Nairoviridae, is transmitted by ticks and causes severe hemorrhagic disease in humans. To study the epidemiology of CCHFV in different ecosystems in Xinjiang, China, a total of 58,932 ..., Abstract
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Research Article
Crimean-Congo hemorrhagic fever (CCHF) caused by the CCHF virus (CCHFV) is a tick-borne natural focal disease with a mortality rate of approximately 50%. CCHFV is widely prevalent in Africa, southern Asia, the Middle East, and southeast Europe. CCHF outbreaks have been reported previously in ..., Abstract
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Research Article
Previous studies indicated that fruit bats carry two betacoronaviruses, BatCoV HKU9 and BatCoV GCCDC1. To investigate the epidemiology and genetic diversity of these coronaviruses, we conducted a longitudinal surveillance in fruit bats in Yunnan province, China during 2009–2016. A total of 59 ..., Abstract
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To better understand the role of wild birds in the emergence and potential dissemination of subtype H7N9 viruses, in late 2015, we collected samples from wild land birds in Hubei province and performed virus isolation as well as full genome sequencing. A novel H7N9 virus was isolated from a ..., Abstract
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Noroviruses (NoVs) are second only to the rotaviruses as etiologic agents of acute fulminant gastroenteritis in infants and young children worldwide. While only one species is currently recognized within the genus Norovirus, molecular epidemiological studies have demonstrated a marked ..., Abstract
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In our previous works, we have reported genetically diverse SARS-related coronaviruses (SARSr-CoV) in a single bat cave, Yunnan province, China, and suggested that some SARSr-CoVs may have high potential to infect humans without the necessity for an intermediate host. In this report, we developed a ..., Abstract
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The hepatitis A virus (HAV) is a positive-sense, single-stranded RNA virus of the genus Hepatovirus in the family Picornaviridae. HAV is a common agent causing acute liver disease worldwide and primarily transmitted by the fecal-oral route. Approximately 120 species of bats exist in ..., Abstract
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Enormous economic losses and reported cases of bird-to-human transmission alert us the importance of AIVs surveillance in natural foci. However, the limited multiplexing capacity of PCR or real-time PCR method made AIVs surveillance insufficient, costly and labor intensive. In this study, we ..., Abstract
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