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Pinho ECC, da Silva Galvão JJ, Ramos AMPC, Aben-Athar CYUP, da Silva RAR, Cunha CLF, Botelho EP, Ferreira GRON. Social and individual vulnerability factors associated with syphilis among populations living on islands in the Brazilian Amazon. BMC Infect Dis 2024; 24:23. [PMID: 38166680 PMCID: PMC10763490 DOI: 10.1186/s12879-023-08955-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 12/27/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND The repercussions of the syphilis epidemic differ according to populations. Identifying and acknowledging the differences and specificities of populations is fundamental in the design and implementation of policies aimed at assisting the groups most vulnerable to syphilis. OBJECTIVE To estimate the prevalence of antibodies against Treponema pallidum and associated vulnerability factors among riverside populations of a capital city in the Brazilian Amazon. METHODS Cross-sectional study was conducted among residents of the periurban islands in Belém, northern Brazil, from August 2020 to January 2021. The inclusion criterion was being a resident of the riverside communities of the Combú Environmental Protection Area, aged 18 years or over. The participants responded to questionnaire and were tested for syphilis using rapid test. Data were analyzed using multiple logistic regression by Minitab version 20® software. RESULTS Overall, a total of 325 riverine were included. Age varied from 18 to 91 years (average 40 years). Prevalence of markers for syphilis was 5.9% (95% CI: 3.3%-8.4%). The multiple regression showed that as age increases, the chances of having syphilis also increase (p = 0.001; aOR: 1.04) and riverside dwellers with more than one sexual partner in the last 6 months had more than four chances of having syphilis compared to people who had only one sexual partner (p = 0.007; aOR: 4.20). CONCLUSION Syphilis circulates among traditional populations in the Amazon and is associated with factors of social and individual vulnerability.
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Affiliation(s)
- Ellen Christiane Correa Pinho
- Programa de Pós Graduação Em Enfermagem, Federal, University of Para, Rua Augusto Correa, 01 - Setor Saúde, Guamá, Belém, Pará, 66075-110, Brazil
| | - José Jorge da Silva Galvão
- Programa de Pós Graduação Em Enfermagem, Federal, University of Para, Rua Augusto Correa, 01 - Setor Saúde, Guamá, Belém, Pará, 66075-110, Brazil
| | - Aline Maria Pereira Cruz Ramos
- Programa de Pós Graduação Em Enfermagem, Federal, University of Para, Rua Augusto Correa, 01 - Setor Saúde, Guamá, Belém, Pará, 66075-110, Brazil
| | | | | | - Carlos Leonardo Figueiredo Cunha
- Programa de Pós Graduação Em Enfermagem, Federal, University of Para, Rua Augusto Correa, 01 - Setor Saúde, Guamá, Belém, Pará, 66075-110, Brazil
| | - Eliã Pinheiro Botelho
- Programa de Pós Graduação Em Enfermagem, Federal, University of Para, Rua Augusto Correa, 01 - Setor Saúde, Guamá, Belém, Pará, 66075-110, Brazil
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Wang S, Chen J, Li Y, Zhang B, Li X, Han Y, Zhang J. Trends in sexually transmitted and blood-borne infections in China from 2005 to 2021: a joinpoint regression model. BMC Infect Dis 2023; 23:741. [PMID: 37904156 PMCID: PMC10614345 DOI: 10.1186/s12879-023-08733-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 10/20/2023] [Indexed: 11/01/2023] Open
Abstract
BACKGROUND Sexually transmitted and blood-borne infections (STBBIs) is a major public health concern in China. This study assessed the overall trends in STBBIs to improve the comprehensive understanding of the burden of STBBIs and provide evidence for their prevention and control. METHODS Data for the period from 2005 to 2021 were analyzed across China on infections with hepatitis B or C; syphilis; gonorrhea; and HIV infection. Trends, annual percent change (APC), and average annual percent change (AAPC) in diagnosis rate was analyzed using joinpoint regression models for the five STBBIs together or individually. RESULTS From 2005 to 2021, the overall diagnosis rate of all five STBBIs increased, with an AAPC of 1.3% [95% confidence interval (CI) -0.5% to 3.1%]. Diagnosis rates of HIV, syphilis and hepatitis C increased individually, but it decreased for infections of hepatitis B and gonorrhea. Joinpoint analysis identified four phases in diagnosis rate of hepatitis C; three phases in diagnosis rate of hepatitis B, HIV infection, and syphilis; two in diagnosis rate of gonorrhea infection. CONCLUSION Despite national efforts to prevent and control STBBIs, their overall diagnosis rate has continued to rise in China, and they remain an important public health challenge. Further efforts should be made to educate the general population about STBBIs, particularly HIV. Interventions targeting vulnerable groups should be adopted and their efficacy monitored through regular analysis of trends.
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Affiliation(s)
- Shuyuan Wang
- Department of Epidemiology and Health Statistics, School of Public Health, Southwest Medical University, Longmatan District, No.1, Section 1, Xianglin Road, Luzhou, Sichuan, People's Republic of China
| | - Jialu Chen
- Department of Epidemiology and Health Statistics, School of Public Health, Southwest Medical University, Longmatan District, No.1, Section 1, Xianglin Road, Luzhou, Sichuan, People's Republic of China
| | - Yuansheng Li
- Department of Epidemiology and Health Statistics, School of Public Health, Southwest Medical University, Longmatan District, No.1, Section 1, Xianglin Road, Luzhou, Sichuan, People's Republic of China
| | - Beibei Zhang
- Department of Epidemiology and Health Statistics, School of Public Health, Southwest Medical University, Longmatan District, No.1, Section 1, Xianglin Road, Luzhou, Sichuan, People's Republic of China
| | - Xiang Li
- Department of Epidemiology and Health Statistics, School of Public Health, Southwest Medical University, Longmatan District, No.1, Section 1, Xianglin Road, Luzhou, Sichuan, People's Republic of China
| | - Ying Han
- Department of Epidemiology and Health Statistics, School of Public Health, Southwest Medical University, Longmatan District, No.1, Section 1, Xianglin Road, Luzhou, Sichuan, People's Republic of China
| | - Junhui Zhang
- Department of Epidemiology and Health Statistics, School of Public Health, Southwest Medical University, Longmatan District, No.1, Section 1, Xianglin Road, Luzhou, Sichuan, People's Republic of China.
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Mohammed KAS, Hameed MM, Mousa AH, Saleh AT. Prevalence and trends of transfusion transmissible infections among blood donors in Basra, Iraq. BMJ Open Gastroenterol 2023; 10:e000968. [PMID: 37487649 PMCID: PMC10373717 DOI: 10.1136/bmjgast-2022-000968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 11/17/2022] [Indexed: 07/26/2023] Open
Abstract
BACKGROUND Despite saving millions of lives through blood transfusion, transfusion-transmissible infections (TTIs) still threaten the lives of patients requiring blood transfusion. Hence, screening blood donors and studying the prevalence of TTIs among blood donors may display the burden of these diseases among our population. The aim of this study was to assess the seroprevalence rates of transfusion transmitted infections among blood donors in Basra, Iraq from 2019 to 2021 as groundwork for providing safe blood transfusion in Iraq. METHODS A cross-sectional study was carried out in the blood banks in Basra, Iraq from 1 January 2019 to 31 December 2021. A total of 197 898 samples were collected and screened for hepatitis B surface antigen (HBsAg), anti-hepatitis B core (HBc), anti-hepatitis C virus (HCV) and syphilis immunologically. RESULTS The prevalence rates of seropositive of viral hepatitis for the year 2019, 2020, 2021 were as following: hepatitis B virus (HBV) rates 1.54%, 1.45% and 1.14% with significant declined trend by 26%; anti-HCV rates were 0.14, 0.12 and 0.11% with significant declined trend by 21.4%; and the syphilis rates were 0.38, 0.47, 0.36 with marked declined trend 5.3%, respectively.Of those donors showed HBV positive, 2503 (1.26%) had positive anti-HBc results, while only 173 (0.0874) showed positive test results for both anti-HBc and HBsAg. CONCLUSION Prevalence rates of viral hepatitis and syphilis showed a steady decline between 2019 and 2021, and these rates were much lower in Basra than in other parts of Iraq and neighbouring countries. The importance of using the anti-HBc test in the screening of blood donors was indicated in this study. These findings would contribute in improving the understanding of TTIs epidemiology and supporting health authorities controlling bloodborne diseases.
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Chen X, Liu Q, Sun P, Yuan S, Liao H, Zhang X. Prevalence of Syphilis Infections Among Volunteer Blood Donors in Jinan Blood Center, China: A 15-Year Retrospective Study. Infect Drug Resist 2022; 15:6431-6440. [PMID: 36349217 PMCID: PMC9637336 DOI: 10.2147/idr.s386495] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 10/27/2022] [Indexed: 10/29/2023] Open
Abstract
BACKGROUND Syphilis infections among volunteer blood donors increased rapidly in recent years. It is important to analyze the demographics of seropositive donor groups and help to recruit donors from low-risk population. OBJECTIVE The aim of this study was to analyze the syphilis prevalence among volunteer blood donors in Jinan Blood Center and give direction to blood recruitment. METHODS AND MATERIALS A cross-sectional study was conducted among blood donors in Jinan, China. Socio-demographic data and blood donation testing data from January 2007 to December 2021 were extracted from the database of blood management software of Jinan Blood Center for analysis. All blood samples were screened by ELISA, and those anti-TP-positive samples were counted and analyzed by sex, age, educational background, occupation and blood donation times. Logistic regression was used to explore risk factors associated with syphilis infection. RESULTS Totally 700,757 blood samples were collected in the study during 2007 to 2021, 2290 cases were detected anti-TP positive with a positive rate of 0.33%. Female, 35-44 years old, with a lower education degree, farmers and first-time donors were the high-risk subgroups. CONCLUSION Consultation and identification of high-risk population groups should be improved. Measures should be taken to make the donor recruitment more professional and detailed.
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Affiliation(s)
- Xiulian Chen
- Department of Blood Quality Control, Jinan Blood Center, Jinan, People’s Republic of China
| | - Qin Liu
- Department of General Management, Jinan Blood Center, Jinan, People’s Republic of China
| | - Ping Sun
- Department of Blood Screening Laboratory, Jinan Blood Center, Jinan, People’s Republic of China
| | - Shuhui Yuan
- Department of Blood Screening Laboratory, Jinan Blood Center, Jinan, People’s Republic of China
| | - Hang Liao
- Department of Blood Screening Laboratory, Jinan Blood Center, Jinan, People’s Republic of China
| | - Xueliang Zhang
- Vice Director of Jinan Blood Center, Jinan, People’s Republic of China
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Prevalence of Treponema Pallidum Antibody among Volunteer Blood Donors in China. CANADIAN JOURNAL OF INFECTIOUS DISEASES AND MEDICAL MICROBIOLOGY 2022; 2022:1668703. [PMID: 35979517 PMCID: PMC9378002 DOI: 10.1155/2022/1668703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 06/27/2022] [Indexed: 11/25/2022]
Abstract
Background Infection with syphilis is still a major public health problem. The precise data for syphilis seroprevalence in the populations will help to develop a strategy for prevention and treatment of it. However, the data for syphilis prevalence in continuous years among volunteer blood donors in China is rare. Methods A retrospective study for Treponema pallidum (TP) antibody in blood donors was conducted from January 2010 to December 2019 at the Blood Center of Zhejiang Province, China. TP antibody was detected with two different reagents using enzyme-linked immunosorbent assay and the only sample which was reactive in the two reagents was defined as seropositive. Results A total of 992,646 volunteer blood donors were analyzed and the positive rate of TP antibody in the blood donors was 0.43%. From 2010 to 2019, the positive rates of TP antibody were 0.53%, 0.51%, 0.51%, 0.43%, 0.36%, 0.18%, 0.11%, 0.12%, 0.11%, and 0.10%, respectively. The positive rates of TP antibody were significantly different among blood donor age group (p < 0.001), with the highest positive rate in 45–54-years-old group (0.93%). The positive rates of TP antibody in male and female blood donors were 0.44% and 0.41%, respectively. The positive rate was 0.57% among the first-time blood donors, which was significantly higher than that of the repeat blood donors (0.17%). The positive rate of TP antibody in blood donors decreased gradually with the increase of educational level. Conclusion The syphilis seroprevalence is low in the blood donors of the Hangzhou area, and the positive rate of blood donors is associated with age, educational level, and times of blood donation. Increasing the number of repeat blood donations is helpful to improve blood safety.
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Šmit R, Wojtalewicz N, Vierbaum L, Nourbakhsh F, Schellenberg I, Hunfeld KP, Lohr B. Epidemiology, Management, Quality of Testing and Cost of Syphilis in Germany: A Retrospective Model Analysis. Front Public Health 2022; 10:883564. [PMID: 35558533 PMCID: PMC9086961 DOI: 10.3389/fpubh.2022.883564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 03/31/2022] [Indexed: 11/13/2022] Open
Abstract
Background A multi-dimensional model can be a useful tool for estimating the general impact of disease on the different sectors of the healthcare system. We chose the sexually transmitted disease syphilis for our model due to the good quality of reported data in Germany. Methods The model included gender- and age-stratified incident cases of syphilis (in- and outpatients) provided by a German statutory health insurance company, as well as seroprevalence data on syphilis in first-time blood donors. Age standardized rates were calculated based on the standard German population. The test quality was assessed by extrapolating the number of false-positive and false-negative results based on data from Europe-wide external quality assessment (EQA) schemes. The model analysis was validated with the reported cases and diagnosis-related group (DRG)-statistics from 2010 to 2012. The annual direct and indirect economic burden was estimated based on the outcomes of our model. Results The standardized results were slightly higher than the results reported between 2010 and 2012. This could be due to an underassessment of cases in Germany or due to limitations of the dataset. The number of estimated inpatients was predicted with an accuracy of 89.8 %. Results from EQA schemes indicated an average sensitivity of 92.8 % and an average specificity of 99.9 % for the recommended sequential testing for syphilis. Based on our model, we estimated a total average minimal annual burden of €20,292,110 for syphilis on the German healthcare system between 2010 and 2012. Conclusions The linking of claims data, results from EQA schemes, and blood donor surveillance can be a useful tool for assessing the burden of disease on the healthcare system. It can help raise awareness in populations potentially at risk for infectious diseases, demonstrate the need to educate potential risk groups, and may help with predictive cost calculations and planning.
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Affiliation(s)
- Renata Šmit
- Northwest Medical Centre, Medical Faculty, Academic Teaching Hospital, Institute for Laboratory Medicine, Microbiology and Infection Control, Goethe University, Frankfurt, Germany
- INSTAND e.V. Gesellschaft zur Foerderung der Qualitaetssicherung in Medizinischen Laboratorien e.V, Duesseldorf, Germany
| | - Nathalie Wojtalewicz
- INSTAND e.V. Gesellschaft zur Foerderung der Qualitaetssicherung in Medizinischen Laboratorien e.V, Duesseldorf, Germany
| | - Laura Vierbaum
- INSTAND e.V. Gesellschaft zur Foerderung der Qualitaetssicherung in Medizinischen Laboratorien e.V, Duesseldorf, Germany
| | - Farzin Nourbakhsh
- Northwest Medical Centre, Medical Faculty, Academic Teaching Hospital, Institute for Laboratory Medicine, Microbiology and Infection Control, Goethe University, Frankfurt, Germany
| | - Ingo Schellenberg
- INSTAND e.V. Gesellschaft zur Foerderung der Qualitaetssicherung in Medizinischen Laboratorien e.V, Duesseldorf, Germany
- Center of Life Sciences, Institute of Bioanalytical Sciences (IBAS), Anhalt University of Applied Sciences, Bernburg, Germany
| | - Klaus-Peter Hunfeld
- Northwest Medical Centre, Medical Faculty, Academic Teaching Hospital, Institute for Laboratory Medicine, Microbiology and Infection Control, Goethe University, Frankfurt, Germany
- INSTAND e.V. Gesellschaft zur Foerderung der Qualitaetssicherung in Medizinischen Laboratorien e.V, Duesseldorf, Germany
| | - Benedikt Lohr
- Northwest Medical Centre, Medical Faculty, Academic Teaching Hospital, Institute for Laboratory Medicine, Microbiology and Infection Control, Goethe University, Frankfurt, Germany
- INSTAND e.V. Gesellschaft zur Foerderung der Qualitaetssicherung in Medizinischen Laboratorien e.V, Duesseldorf, Germany
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