Publications by authors named "Bian Li Xu"

Objective: To survey avian influenza A viruses (AIVs) in the environment and explore the reasons for the surge in human H7N9 cases.

Methods: A total of 1,045 samples were collected from routine surveillance on poultry-related environments and 307 samples from human H7N9 cases-exposed environments in Henan from 2016 to 2017. The nucleic acids of influenza A (Flu A), H5, H7, and H9 subtypes were detected by real-time polymerase chain reaction.

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Objective: To analyze the epidemiological and clinical data of an imported case of visceral leishmaniasis in Henan Province, and explore the method of laboratory diagnosis of kala-azar.

Methods: The epidemiological and clinical data of an imported visceral leishmaniasis patient were analyzed. bodies in bone marrow smears were observed microscopically.

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In July of 2012, mass infections with Paragonimus species were detected in the Henan province sickening 11 of 51 people. In May 2011, these individuals had participated in an excursion during which freshwater crabs were caught and served after being toasted. Before the group infections with Paraginimus species was confirmed, 5 of the 11 patients had been misdiagnosed as tuberculosis (TB) and treated with an anti-TB drug regimen for six months.

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Article Synopsis
  • Severe Fever with Thrombocytopenia Syndrome (SFTS) is a serious disease caused by the SFTS virus, which is spreading in East Asia and has a high mortality rate.
  • A study in Henan Province, China, tested 615 animals (both domestic and wild), revealing that 44.72% had antibodies against the virus, with no significant differences between the two groups.
  • The research also found that 17.07% of the animals were positive for the virus itself, with a strain isolated from a yellow weasel, indicating that these animals may serve as natural reservoirs for SFTSV.
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Objective: To understand and analyze the epidemic status of human intestinal parasitic diseases in the ecological region of the Qinba Mountains in Henan Province, so as to provide the evidence for the control of the diseases in this region.

Methods: According to the methods of , 26 survey spots were selected in 8 counties (cities) in ecological regions of Qinba Mountains in Henan Province in 2015. After collecting the human fecal samples, the eggs of intestinal helminthes were detected with the modified Kato-Katz thick smear method, the species of of the hookworm egg-positive samples were identified with the tube fecal culture method, the eggs of were detected by using the adhesive tape method in children aged 3 to 6 years, and the cyst and trophozoite of intestinal protozoa were examined by iodine staining.

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Background: Hand, foot, and mouth disease (HFMD) is a common infectious disease in childhood caused by an enterovirus (EV), and which is principally seen in children under 5 years of age. To promote diagnostic awareness and effective treatments, to further standardize and strengthen the clinical management and to reduce the mortality of HFMD, the guidelines for diagnosis and treatment have been developed.

Methods: National Health Commission of China assembled an expert committee for a revision of the guidelines.

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China's prevention and control of parasitic diseases has made remarkable achievements. However, the prevalence and transmission of parasitic diseases is impacted by the complicated natural and social factors of environment, natural disasters, population movements, and so on. Therefore, there are still the risks of the outbreak of emergency parasitic diseases affairs, which may affect the control effectiveness of parasitic diseases and endanger the social stability seriously.

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Article Synopsis
  • - The study focuses on the genetic diversity of Plasmodium vivax malaria in Henan, China, which has seen a significant decline in cases since the 1970s due to government efforts and healthcare initiatives aimed at elimination.
  • - Researchers analyzed 32 P. vivax isolates collected from 2008 to 2011, finding that all were of the VK210 type but displayed variations that resulted in eight different sub-types, with HN7 and HN3 being the most common.
  • - The results indicate a relatively conserved population of P. vivax parasites, providing valuable baseline data for future malaria control efforts and helping to identify potential new cases based on genetic differences.
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Objective: To understand the epidemic situation of soil-transmitted nematodiasis in the national surveillance site in Henan Province.

Methods: Over 1 000 fecal samples from inhabitants in Huaiyang County of Henan Province, which was a national surveillance site, were collected each year from 2006 to 2015, the eggs of soil-transmitted nematodes and other intestinal helminths were examined by Kato-Kats technique. The cellophane swab method was used to detect eggs in children aged 3 to 12 years.

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Background: Rabies is a serious reemerging zoonosis in China. At present human rabies cases are primarily diagnosed based on clinical presentation.

Case Presentation: In August 2012, a woman and her son were attacked by a stray dog in Henan, China.

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Background: The spleen plays a pivotal role in the rapid clearance of parasitized red blood cells in patients with falciparum malaria after artemisinin treatment. Prolonged parasite clearance can be found in patients who have had a splenectomy, or those with hemoglobin abnormalities and/or reduced immunity, which are all distinguishable from artemisinin resistance. This paper reports on a case of prolonged parasite clearance in a Chinese splenectomized patient with falciparum malaria imported from Nigeria.

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Background: Human noroviruses are a major cause of viral gastroenteritis and are the main etiological agents of acute gastroenteritis outbreaks. An increasing number of outbreaks and sporadic cases of norovirus have been reported in China in recent years. There was a large acute gastroenteritis outbreak at a university in Henan Province, China in the past five years.

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Article Synopsis
  • The study aimed to analyze the genetic sequence of the PoTRA gene from Plasmodium ovale in malaria cases imported to Henan Province in 2015.
  • Blood samples from 22 malaria patients were collected, and methods like DNA extraction, PCR amplification, and sequencing were used to identify the subspecies and analyze genetic differences.
  • Results showed two subspecies, P. ovale walikeri and P. ovale curtisi, with P. ovale curtisi having three genetic types and P. ovale wallikeri having two, highlighting significant genetic diversity in the PoTRA gene.
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Article Synopsis
  • * A total of 5,229 people were examined, revealing a low infection rate of intestinal helminths (0.3%-0.6%) with mild infections, predominantly in children under 10 years and those over 70, but no severe or multiple infections were observed.
  • * Soil samples showed no presence of Ascaris eggs, indicating a potential control of this particular nematode, while the overall findings suggest that while helminth infections exist, they remain
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Objective: To analyze Plasmodium falciparum chloroquine resistant transporter (Pfcrt) gene polymorphism in imported falciparum malaria cases in Henan Province in 2015.

Methods: Blood samples were collected from 132 cases of imported falciparum malaria in Henan Province in 2015. DNA was extracted from the samples, and the Pfcrt was amplified by nested PCR using specific primers.

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Background: Anti-malarial drug resistance is a primary public health problem. Haplotypes of pfcrt gene have been implicated to be molecular markers of chloroquine (CQ) resistance. This study aims to explore the prevalence of polymorphisms in pfcrt in Plasmodium falciparum-infected patients imported from Africa in Henan province.

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Objective: To analyze the costs for the diagnosis and treatment of malaria in Henan Province and the influential factors.

Methods: Malaria cases diagnosed in and reported by medical institutions in Henan Province from November 2013 to October 2014 were selected. General information and clinical information of those with further microscopic confirmation were also collected.

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A vivax malaria case in Henan Province was diagnosed as an indigenous case firstly in June 2013, and replased in April 2014. The clinical data of this case were collected and the epidemiological investigation was conducted. The blood samples were examined by Giemsa-stained blood smear, rapid diagnostic test strip (RDT) and nested PCR.

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Although co-infection of tuberculosis (TB) and intestinal parasites, including protozoa and helminths, in humans has been widely studied globally, very little of this phenomenon is known in China. Therefore, a cross-sectional study was conducted in a rural county of China to investigate such co-infections. Patients with pulmonary TB (PTB) undergoing anti-Mycobacterium tuberculosis (anti-MTB) treatment were surveyed by questionnaires, and their feces and blood specimens were collected for detection of intestinal protozoa and helminths, routine blood examination and HIV detection.

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Background: Vivax malaria was historically epidemic in Henan Province of China and Anopheles sinensis was the main vectors and poor farming communities bare the greatest burden of disease. Knockdown resistance in An. sinensis is one of the mechanisms of resistance against pyrethroids.

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This chapter reviews the patterns of malaria re-emergence and outbreak that occurred in the Huang-Huai Plain of China in 2006, and the way of quick response to curtail the outbreak by mass drug administration and case management. The contribution of the each intervention in quick response is discussed. Particularly due to the special ecological characteristics in the Huang-Huai Plain, the intervention of vector control is not implemented.

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In recent years, there has been a substantial increase of imported Plasmodium vivax incidence in Henan Province. As China is in a pre-elimination phase, the surveillance of imported malaria is essential, but there is no good way to distinguish imported cases from indigenous cases. This paper reports a case of a 39-year-old man who acquired P.

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In 2013, the first dengue fever (DF) outbreak in central China was reported in the central of Henan province, northern temperate regions, although they have been sequentially recorded in Southern China. 106 suspected DF cases were reported and 73 patients were confirmed dengue virus type 3 (DEN-3) infections. 62/392 (15.

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Background: Piroplasms are kinds of tick-borne parasitic apicomplexan protozoa, which are detrimental to humans and animals in tropical and subtropical areas around the world. Up until now, there has been a limited amount of reliable information available about the prevalence of piroplasms infections in wild animals in China. Therefore, we have investigated the infections of Babesia and Theileria species in both domestic and wild animals in Xinyang city, Henan province, where tick-borne diseases have recently been reported.

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Background: Ticks can transmit a number of pathogens to humans and domestic animals. Tick borne diseases (TBDs), which may lead to organ failure and death have been recently reported in China. 98.

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