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Yue Y, Chen Y, Du X, Jin Y, Hu M, Jiang X, Wang C, Chen Z, Su L, Chen C, Jiang S, Tuo X. A survey of a COVID-19 cluster of charter flight importation. Public Health 2021; 199:107-109. [PMID: 34601152 PMCID: PMC8435375 DOI: 10.1016/j.puhe.2021.09.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 09/03/2021] [Indexed: 12/23/2022]
Abstract
OBJECTIVES Although a number of cases of importation with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection have been reported, there are still no data available concerning the characteristics in the coronavirus disease 2019 (COVID-19) cluster of charter flight importation. Here, we provide an analysis of COVID-19 cases and their close contacts who worked for the same company on a project in Karbala, Iraq, and returned back to Chengdu, China, by a charter flight. METHODS The data of imported COVID-19 cases and their close contacts were obtained from National Notifiable Disease Report System of Chinese Center for Disease Control and Prevention and field epidemiological investigation reports by Centers for Disease Control and Prevention (CDCs) in Chengdu. The information of general characteristics and laboratory findings of this cluster were collected and summarized. RESULTS One hundred and six (66.67%) of 159 charter flight passengers tested positive for COVID-19 before entry. Through treatment, all 159 people tested negative and meet the requirements of taking flights bound for China before boarding. However, there has been still 36 (22.64%) of them tested positive after entry. The median time from entry to confirmation was 1.0 day (Interquartile Range (IQR): 0-4.3). The Cycle threshold value (Ct value) of 36 patients' positive samples are all above 30 and most values are above 35. CONCLUSIONS In conclusion, there is still a risk that a number of COVID-19 cases can be imported through charter flight. However, the infectivity of confirmed patients of the charter flight was considered to be low.
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Affiliation(s)
- Y Yue
- Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu, Sichuan, 610000, PR China; Chengdu Center for Disease Control and Prevention, Chengdu, Sichuan, 610000, PR China
| | - Y Chen
- Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu, Sichuan, 610000, PR China; Chengdu Center for Disease Control and Prevention, Chengdu, Sichuan, 610000, PR China
| | - X Du
- Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu, Sichuan, 610000, PR China; Chengdu Center for Disease Control and Prevention, Chengdu, Sichuan, 610000, PR China
| | - Y Jin
- Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu, Sichuan, 610000, PR China; Dayi County Center for Disease Control and Prevention, Chengdu, Sichuan, 610000, PR China
| | - M Hu
- Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu, Sichuan, 610000, PR China; Chengdu Center for Disease Control and Prevention, Chengdu, Sichuan, 610000, PR China
| | - X Jiang
- Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu, Sichuan, 610000, PR China; Chengdu Center for Disease Control and Prevention, Chengdu, Sichuan, 610000, PR China
| | - C Wang
- Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu, Sichuan, 610000, PR China; Chengdu Center for Disease Control and Prevention, Chengdu, Sichuan, 610000, PR China
| | - Z Chen
- Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu, Sichuan, 610000, PR China; Chengdu Center for Disease Control and Prevention, Chengdu, Sichuan, 610000, PR China
| | - L Su
- Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu, Sichuan, 610000, PR China; Chengdu Center for Disease Control and Prevention, Chengdu, Sichuan, 610000, PR China
| | - C Chen
- Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu, Sichuan, 610000, PR China; Chengdu Center for Disease Control and Prevention, Chengdu, Sichuan, 610000, PR China
| | - S Jiang
- Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu, Sichuan, 610000, PR China; Chengdu Center for Disease Control and Prevention, Chengdu, Sichuan, 610000, PR China
| | - X Tuo
- Chengdu Workstation for Emerging Infectious Disease Control and Prevention, Chinese Academy of Medical Sciences, Chengdu, Sichuan, 610000, PR China; Chengdu Center for Disease Control and Prevention, Chengdu, Sichuan, 610000, PR China.
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Xin Z, Hua L, Shi TT, Tuo X, Yang FY, Li Y, Cao X, Yang JK. A genome-wide DNA methylation analysis in peripheral blood from patients identifies risk loci associated with Graves' orbitopathy. J Endocrinol Invest 2018; 41:719-727. [PMID: 29190000 DOI: 10.1007/s40618-017-0796-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 11/14/2017] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Graves' orbitopathy (GO) is an inflammatory orbital disease of autoimmune origin with the potential to cause severe functional and psychosocial effects. The pathogenesis has not been fully elucidated. We investigated whether DNA methylation was associated with GO incidence in Chinese patients. MATERIALS AND METHODS Six GO patients and six age-matched controls were recruited, and genome-wide DNA methylation patterns were analyzed in their peripheral blood. t tests were performed to determine differential methylated sites in genomic regions and the univariable logistic regression analyses was performed to evaluate their risk with GO incidence. Cluster analysis and principal component analysis (PCA) were performed to determine the effects of the extracted differentially methylated sites. RESULTS One hundred and forty-eight differentially methylated sites were identified, including CD14 (fold change = 4.31, p = 0.005), IL17RE (fold change = 2.128, p = 0.005), and DRD4 (fold change = 0.25, p = 0.004), and were supported by cluster and PCA analyses. Univariable logistic regression analyses showed that the methylation patterns at 12 loci were associated with GO incidence. The relative risk per 1% decrease in methylation at ZCCHC6 and GLI3 was 0.15 (95% CI 0.03-0.91; p = 0.039) and 0.65 (95% CI 0.42-0.98; p = 0.042), respectively. Pearson correlation analyses demonstrated that methylation levels at IL17RE were positively associated with Clinical Activity Score (CAS) (r = 0.967, p < 0.05). CONCLUSIONS Our results demonstrate that differential methylation levels at analyzed sites (genes) may be risk markers of GO. DNA methylation analysis could provide new insights into understanding the disease and provide new treatment strategies for GO in Chinese patients.
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Affiliation(s)
- Z Xin
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
| | - L Hua
- Department of Mathematics, School of Biomedical Engineering, Capital Medical University, Beijing, China
| | - T-T Shi
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - X Tuo
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - F-Y Yang
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Y Li
- Physical Examination Department, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - X Cao
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - J-K Yang
- Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
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Huang MZ, Wang H, Wang SY, Cui DA, Tuo X, Liu YM. Molecular characterization and phylogenetic analysis of porcine epidemic diarrhea virus samples obtained from farms in Gansu, China. Genet Mol Res 2016; 15:gmr7696. [PMID: 27051033 DOI: 10.4238/gmr.15017696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Porcine epidemic diarrhea poses significant sanitation problems in the porcine industry, and has negatively affected the economy in recent years. In this study, 48 fecal specimens were collected from piglets from four intensive swine farms located in the Gansu Province of China. The molecular diversity and phylogenetic relationships between porcine epidemic diarrhea viruses (PEDV) prevalent in Gansu were probed, and the resultant proteins were characterized. Sequence analysis of the spike protein (S) genes showed that each specimen had unique characteristics, and that the PEDV1/S/4 strain could be differentiated from the others via a unique mutation of the S gene. The phylogeny of S glycoprotein showed that all strains were clustered into two major groups. The four Gansu PEDV field strains were characterized into different groups; this finding was consistent with the results of the protein characterization prediction. This analysis additionally revealed the unique characteristics of each specimen. The results of this study could be used to elucidate the prevalence of PEDV and contribute to the prevention of PEDV in Gansu.
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Affiliation(s)
- M Z Huang
- Engineering and Technology Research Center of Traditional Chinese Veterinary Medicine of Gansu Province.,Key Lab of New Animal Drug Project of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China.,Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - H Wang
- Engineering and Technology Research Center of Traditional Chinese Veterinary Medicine of Gansu Province.,Key Lab of New Animal Drug Project of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China.,Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - S Y Wang
- Engineering and Technology Research Center of Traditional Chinese Veterinary Medicine of Gansu Province.,Key Lab of New Animal Drug Project of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China.,Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - D A Cui
- Engineering and Technology Research Center of Traditional Chinese Veterinary Medicine of Gansu Province.,Key Lab of New Animal Drug Project of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China.,Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - X Tuo
- Engineering and Technology Research Center of Traditional Chinese Veterinary Medicine of Gansu Province.,Key Lab of New Animal Drug Project of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China.,Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
| | - Y M Liu
- Engineering and Technology Research Center of Traditional Chinese Veterinary Medicine of Gansu Province.,Key Lab of New Animal Drug Project of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China.,Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Lanzhou, Gansu, China
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