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Souza-Silva G, Mol MPG. Hepatitis B or C prevalence in waste pickers from South America: a systematic review. J Public Health (Oxf) 2020; 43:e578-e583. [PMID: 32529235 DOI: 10.1093/pubmed/fdaa065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/02/2020] [Accepted: 05/03/2020] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Waste pickers are considered a vulnerable population at risk for potential health damage. Taking into account the risk of hepatitis B or C infection in this population, the aim of this study was to show the prevalence of these diseases in waste pickers from South America, through a systematic review. METHODS The search covered publications until February 2020, accessed through Google Scholar database. Epidemiological studies on hepatitis B or C focused on waste pickers in South America were included. All selected papers were evaluated for quality. RESULTS Six studies composed this systematic review, all conducted in Brazil and using cross-sectional study. The prevalence of all makers (HBsAg or anti-HBc) for hepatitis B varied from 4.3 to 33.4% while for hepatitis C varied from 1.6 to 12.4%. CONCLUSION The lack of results showed the requirement for more research about hepatitis including this informal workers group. High prevalences of hepatitis B and C in waste pickers highlighted the need of increase preventive health protection as vaccination against hepatitis B; training on working conditions; and the use of individual protection.
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Affiliation(s)
- Gabriel Souza-Silva
- Research and Development Department, Ezequiel Dias Foundation (FUNED), Belo Horizonte 30510010, Brazil
| | - Marcos Paulo Gomes Mol
- Research and Development Department, Ezequiel Dias Foundation (FUNED), Belo Horizonte 30510010, Brazil
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Arafa A, Eshak ES. Medical waste handling and hepatitis B virus infection: A meta-analysis. Am J Infect Control 2020; 48:316-319. [PMID: 31521422 DOI: 10.1016/j.ajic.2019.08.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 08/07/2019] [Accepted: 08/08/2019] [Indexed: 01/04/2023]
Abstract
BACKGROUND Hepatitis B virus (HBV) infection is a significant occupational hazard in health care settings and represents a public health concern. The aim of this study was to investigate the association between medical waste handling and HBV infection by conducting a meta-analysis of available evidence. METHODS Pooled odds ratios (ORs) and confidence intervals (CIs) of the included studies were calculated, using the random-effects model, for medical waste handlers versus non-medical waste handlers. Publication bias was detected using the regression test for funnel plot asymmetry, and quality assessment was conducted according to the Newcastle-Ottawa Scale. RESULTS Nine cross-sectional studies, published between 1992 and 2018, were included. Medical waste handling was associated with higher odds of HBV infection compared to non-medical waste handling (pooled OR = 2.88; 95% CI, 1.40-5.93; I2 = 61.36%; P value for heterogeneity = .008). Subgroup analysis showed higher odds of HBV infection in studies conducted in Africa (pooled OR = 3.61; 95% CI, 1.19-11.00). Most studies were of poor to fair quality; yet, little evidence of publication bias was detected (P value for publication bias = .983). No single study showed a substantial impact on the pooled results. CONCLUSIONS The present meta-analysis supports the suggestion that medical waste handling is associated with HBV infection. This association was shown to be more obvious in African health care settings.
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Affiliation(s)
- Ahmed Arafa
- Department of Public Health, Graduate School of Medicine, Osaka University, Osaka, Japan; Department of Public Health, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt.
| | - Ehab S Eshak
- Department of Public Health, Graduate School of Medicine, Osaka University, Osaka, Japan; Department of Public Health, Faculty of Medicine, Minia University, El-Minia, Egypt
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Mol MPG, Cairncross S, Greco DB, Heller L. Is waste collection associated with hepatitis B infection? A meta-analysis. Rev Soc Bras Med Trop 2018; 50:756-763. [PMID: 29340451 DOI: 10.1590/0037-8682-0010-2017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 09/21/2017] [Indexed: 11/22/2022] Open
Abstract
This meta-analysis, which is based on a previously published systematic review, aims to contribute to the scientific discussion on hepatitis B virus (HBV) infection in workers who are exposed to domestic and healthcare wastes. Publications were sought which had been made available on the data used by December 2013 and updated to December 2016. The quality of the included studies was assessed according to the guidelines of Loney et al. for the critical appraisal of studies on the prevalence or incidence of a health problem. To verify the presence of heterogeneity between the papers, we used the Chi-squared test based on a Q statistic. A funnel plot was used to test for publication bias. All included studies had across-sectional study design. The association between exposure to waste and positive serology for the HBV surface antigen (HBsAg) showed a significant association [odds ratio (OR) 1.89, 95% confidence interval (CI) 1.27-2.86; p = 0.0019]. The prevalence rates of HBsAg and anti-HBc seropositivity was 0.04 (95% CI 0.03-0.05) and 0.21 (95% CI 0.14-0.28), respectively (p <0.0001). We found no evidence of publication bias. The results of this meta-analysis indicate a statistically significant association between exposure to solid waste, whether healthcare or domestic, and positive HBV infection markers. Therefore, the working conditions of waste collectors should be analyzed more closely. Immunization against HBV is recommended as the chief preventive measure for all solid waste workers.
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Affiliation(s)
- Marcos Paulo Gomes Mol
- Diretoria de Pesquisa e Desenvolvimento, Fundação Ezequiel Dias, Belo Horizonte, MG, Brasil.,Departamento de Engenharia Sanitária e Ambiental, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Sandy Cairncross
- Department of Disease Control, London School of Hygiene and Tropical Medicine, London, England
| | | | - Leo Heller
- Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, MG, Brasil
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Mol MP, Gonçalves JP, Silva EA, Scarponi CF, Greco DB, Cairncross S, Heller L. Seroprevalence of hepatitis B and C among domestic and healthcare waste handlers in Belo Horizonte, Brazil. WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2016; 34:875-883. [PMID: 27207769 DOI: 10.1177/0734242x16649686] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Infection with the hepatitis B and C viruses may occur through contact with infected body fluids, including injury with infected sharps. Collectors of domestic or healthcare wastes are potentially exposed to these infections. The aim of this article is to investigate the risk factors associated with the prevalence of hepatitis B and C viruses (HBV and HCV) infection among domestic and healthcare waste workers in Belo Horizonte, Brazil. A cross-sectional study of hepatitis B and C infection was conducted from November 2014 to January 2015, through blood sample collection and interviews about socio-demographic factors with 61 workers exposed to healthcare waste ('exposed') and 461 exposed only to domestic wastes ('unexposed'). The prevalence of antibodies to HCV (Anti-HCV) antibodies was 3.3% in 'exposed' workers and 0.9% in 'unexposed', and of antibody to hepatitis B core antigen (Anti-HBc) was 9.8% and 5.6% in 'exposed' and 'unexposed' workers, respectively. Only 207 (44.9%) of those exposed to domestic waste and 45 (73.8%) of those handling healthcare waste were effectively immunised against hepatitis B virus (HBV). Exposures to domestic waste and to healthcare wastes were associated with similar risks of infection with HBV. The risk of hepatitis C virus (HCV) infection was marginally higher among healthcare waste workers compared with domestic waste workers, probably because of needlestick accidents owing to deficient sharps management systems. Immunisation against hepatitis B and screening tests to ensure the success of vaccination should be a condition for recruitment for both groups of waste workers.
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Affiliation(s)
- Marcos Pg Mol
- Fundação Ezequiel Dias, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | | | | | | | - Dirceu B Greco
- Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | | | - Leo Heller
- Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Brasil
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Mol MPG, Greco DB, Cairncross S, Heller L. Hepatitis B and C in household and health services solid waste workers. CAD SAUDE PUBLICA 2016; 31 Suppl 1:295-300. [PMID: 26648384 DOI: 10.1590/0102-311x00083814] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Accepted: 09/09/2015] [Indexed: 11/22/2022] Open
Abstract
Human contact with solid waste poses biological, chemical, and physical health risks for workers involved in waste collection, transportation, and storage. The potential risk to human health resulting from contact with health services waste or household waste still sparks considerable controversy. The aim of this study was to identify the context of scientific discussions on risk/infection from the hepatitis B and C viruses in workers that collect solid waste from health services or households. The search covered publications up to 2013 in Brazilian and international databases, and 11 articles were selected through a literature review. Of these, six conclude that there is an increased risk of infection in workers that collect household waste when compared to those unexposed to waste, three point to greater risk for workers that collect health services waste as compared to those that collect ordinary waste, and the other two found no difference between exposed and unexposed individuals.
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Affiliation(s)
| | | | | | - Leo Heller
- Escola de Engenharia, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
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Amsalu A, Worku M, Tadesse E, Shimelis T. The exposure rate to hepatitis B and C viruses among medical waste handlers in three government hospitals, southern Ethiopia. Epidemiol Health 2016. [DOI: 10.4178/epih.e2016001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Amsalu A, Worku M, Tadesse E, Shimelis T. The exposure rate to hepatitis B and C viruses among medical waste handlers in three government hospitals, southern Ethiopia. Epidemiol Health 2016; 38:e2016001. [PMID: 26797221 PMCID: PMC4789605 DOI: 10.4178/epih/e2016001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Accepted: 01/05/2016] [Indexed: 12/04/2022] Open
Abstract
OBJECTIVES: The aim of this study was to assess the rate of and risk factors for exposure to hepatitis B virus (HBV) and hepatitis C virus (HCV) among medical waste handlers. METHODS: A cross-sectional study was conducted from December 2014 to January 2015. A total of 152 medical waste handlers (MWH) and 82 non-medical waste handlers (NMWH) were studied. Serum samples were collected from participants and screened for hepatitis B surface antigen (HBsAg), hepatitis B core antibody (anti-HBc) and anti-HCV using rapid immunochromatography assay. MWH were also screened for hepatitis B surface antibody (anti-HBs). RESULTS: The respective prevalence of HBsAg, anti-HBc and anti-HCV was 1.3%, 39.4%, and 0.7% in MWH, compared to 2.4%, 17.1%, and 1.2%, respectively, in NMWH. Among MWH, 58.6% were susceptible to HBV infection. There was a significant difference in the rate of lifetime exposure to HBV in MWH compared with NMWH (odds ratio [OR], 3.17; 95% confidence interval [CI], 1.64 to 6.13). However, there was no significant difference between participant groups with respect to current HBV infection (OR, 0.53; 95%CI, 0.07 to 3.86) or anti-HCV (OR, 0.54; 95%CI, 0.03 to 8.69). Age older than 40 years and working in a hospital laundry were independent predictors of lifetime exposure to HBV infection. Eleven (7.2%) respondents were vaccinated against HBV. CONCLUSIONS: Lifetime exposure to HBV infection was significantly higher in MWH than in NMWH. The majority of MWH was not vaccinated against HBV and thus remains susceptible to contracting the infection. Screening upon hire followed by vaccination of MWH is recommended to reduce the transmission of HBV.
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Affiliation(s)
- Anteneh Amsalu
- Department of Medical Microbiology, School of Biomedical and Laboratory Sciences, University of Gondar, Gondar, Ethiopia
| | - Mesfin Worku
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Hawassa University, Hawassa, Ethiopia
| | - Endale Tadesse
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Hawassa University, Hawassa, Ethiopia
| | - Techalew Shimelis
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Hawassa University, Hawassa, Ethiopia
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Rachiotis G, Papagiannis D, Markas D, Thanasias E, Dounias G, Hadjichristodoulou C. Hepatitis B virus infection and waste collection: prevalence, risk factors, and infection pathway. Am J Ind Med 2012; 55:650-5. [PMID: 22544469 DOI: 10.1002/ajim.22057] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2012] [Indexed: 11/06/2022]
Abstract
BACKGROUND Waste collectors have a potential risk of infectious diseases. The aim of the study was to assess; the prevalence of hepatitis B (HBV), risk factors for infection and possible ways of virus transmission among municipal solid waste workers (MSWWs) in a municipality of central Greece. METHODS A cross-sectional study was conducted among the employees of a municipality in Central Greece. The prevalence of an HBV infection biological marker (anti-Hbc) and its association with exposure to waste, socio-demographic factors, and history of occupational injuries with sharp objects/needle sticks was examined among 208 employees. RESULTS The prevalence of HBV infection among the municipal waste collectors was 23%. Logistic regression analysis showed that exposure to waste (OR = 4.05;95%CI = 1.23-13.33) and age (OR = 5.22;95% CI = 1.35-20.1) were independently associated with the anti-Hbc positivity. Moreover, waste collectors who reported occupational injuries with needle sticks were at higher risk of HBV infection (RR = 2.64; 95% CI = 1.01-6.96). CONCLUSIONS Occupational exposure to waste is a possible risk factor for HBV infection. Occupational injury with sharp instruments could be a means of hepatitis B virus transmission. Immunization of MSWWs and adoption of more safe ways for waste collection could be considered in order to control the risk of HBV infection.
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Affiliation(s)
- George Rachiotis
- Medical Faculty, Department of Hygiene and Epidemiology, School of Science, University of Thessaly, Larissa, Greece.
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Anagaw B, Shiferaw Y, Anagaw B, Belyhun Y, Erku W, Biadgelegn F, Moges B, Alemu A, Moges F, Mulu A. Seroprevalence of hepatitis B and C viruses among medical waste handlers at Gondar town Health institutions, Northwest Ethiopia. BMC Res Notes 2012; 5:55. [PMID: 22264306 PMCID: PMC3274440 DOI: 10.1186/1756-0500-5-55] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Accepted: 01/22/2012] [Indexed: 01/04/2023] Open
Abstract
Background Viral hepatitis is an inflammation of the liver due to viral infections and there are groups of viruses that affects the liver of which hepatitis B and C viruses are the causative agents of sever form of liver disease with high rate of mortality. Medical waste handlers who undergo collection, transportation, and disposal of medical wastes in the health institutions are at risk of exposure to acquire those infections which transmit mainly as a result of contaminated blood and other body fluids including injury with sharp instruments, splash to the eye or mucous membrane. This study aimed to determine the prevalence of hepatitis B and/or C viruses and associated risk factors among medical waste handlers. Results A cross-sectional study was conducted from April, 2011 to June, 2011 in government health institutions at Gondar town. Socio-demographic and possible risk factors data from medical waste handlers were collected using pre-tested and well structured questionnaires. Venous bloods were collected and the serums were tested for hepatitis B surface antigen and anti-hepatitis C antibody using rapid Immunochromatography assay. Data was entered and analyzed using SPSS software package (version16). Chi-square and Fisher exact tests were used to assess risk of association. A p-value of < 0.05 was considered statistical significance. A total of 100 medical waste handlers and 100 non-clinical waste handlers were examined for HBV and HCV viruses. HBV was detected in 6 (6.0%) and 1 (1.0%) and HCV in 1 (1.0%) and 0 (0.0%) of medical waste handlers and non-clinical waste handlers, respectively. Significant differences were observed in the detection rates of HBV (OR = 6.3; X2 = 4.1; P = 0.04) and overall infection rate (HBV + HCV) (OR = 7.5; X2 = 5.2; P: 0.02) in medical waste handlers when compared with non-clinical waste handlers. It was found that none of the observed risk factors significantly associated with rate of hepatitis infection compared to others. Conclusions Prevalence of HBV and HCV were significantly higher in medical waste in relation to non-clinical waste handlers. There were poor waste management system which contributed for occurrence of higher degree of sharps injury and blood and body fluids splash.
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Affiliation(s)
- Belay Anagaw
- Department of Medical Microbiology, School of Biomedical and Laboratory Sciences, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia.
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Shiferaw Y, Abebe T, Mihret A. Hepatitis B virus infection among medical aste handlers in Addis Ababa, Ethiopia. BMC Res Notes 2011; 4:479. [PMID: 22051187 PMCID: PMC3234303 DOI: 10.1186/1756-0500-4-479] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Accepted: 11/03/2011] [Indexed: 12/03/2022] Open
Abstract
Background Healthcare wastes contain a wide range of microorganisms among which hepatitis B virus (HBV) are the most significant pathogens. No data about the prevalence of HBV among medical waste handlers is available in Addis Ababa, Ethiopia. Therefore; this study was conducted to describe the prevalence of HBV infection among medical waste handlers in Government hospitals of Addis Ababa, Ethiopia. Findings A cross sectional study was conducted among 252 medical and non-medical waste handlers working in three Government hospitals of Addis Ababa between May to July, 2010. Predesigned and tested questionnaire was used to collect soiociodemographic information. Blood sample was taken from 252 waste handlers and serum was tested for Hepatitis B surface antigen (HBsAg) and anti-Hepatitis core antigen (anti-HBcAg) using Enzyme Linked Immuno Sorbent Assay. Of the 126 Medical Waste Handlers and 126 Non Medical Waste Handler, HBsAg was detected in 8 (6.3%) and 1 (0.8%), and anti-HBcAg in 60 (47.6%) and 40 (31.7%), respectively. Significant differences were observed in the detection rates of HBsAg (OR: 8, 95% CI: 1.02, 63.02; p = 0.01), Anti-HB c Ag (OR: 1.5, 95% CI: 1.1, 2.1; p = 0.01) and either markers (OR: 1.7, 95% CI: 1.2, 2.2; p = 0.001) in medical waste handlers compared to non medical waste handlers. 19.8% were trained to handle medical waste and none was immunized against HBV. Conclusion This study shows a high prevalence of HBV infection in medical waste handlers compared to non medical waste handlers. Lack of training on how to handle medical waste among medical waste handlers was high.
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Affiliation(s)
- Yitayal Shiferaw
- Department of Medical Laboratory Science, University of Gondar collage of Medicine & Health science, Gondar, PO,BOX:ET196, Ethiopia.
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Popp W, Hansen D, Hilgenhöner M, Grandek M, Heinemann A, Blättler T. [Waste management in hospitals. Current situation in the state of North Rhine-Westphalia]. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz 2009; 52:753-63. [PMID: 19626285 DOI: 10.1007/s00103-009-0877-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
In 20 hospitals in North Rhine-Westphalia in-plant handling wastes and the delivery of the waste to the disposer were examined. Deficits were seen regarding risk assessment and operating instructions, support by company doctors, personal protection equipment, and break areas for the waste collecting personnel. Also the qualification of the waste management officer and his/her time contingent, correct declaration of the wastes, the training of the waste collecting personnel, the cleaning of multi-use containers and transportation vehicles, storage of the wastes at the collecting points, and the use of sharp collecting boxes were to be partly criticized. Consequences and recommendations are given, concerning the company's obligations (e.g., provide risk assessment, operating instructions), waste management officer (e.g., qualification, enough time contingent, regular inspections), waste collecting personnel (e.g., training courses), industrial safety (e.g., protection equipment, break area wash places), company doctors, transportation vehicles in the house (e.g., regular cleaning), one-way collectors (e.g., labelling at the site of the collection), multi-use collectors (e.g., cleaning), and compressing containers (e.g., larger maintenance openings).
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Affiliation(s)
- W Popp
- Krankenhaushygiene, Universitätsklinikum Essen, Hufelandstr. 55, 45122 Essen.
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Franka E, El-Zoka AH, Hussein AH, Elbakosh MM, Arafa AK, Ghenghesh KS. Hepatitis B virus and hepatitis C virus in medical waste handlers in Tripoli, Libya. J Hosp Infect 2009; 72:258-61. [PMID: 19443080 DOI: 10.1016/j.jhin.2009.03.019] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2009] [Accepted: 03/27/2009] [Indexed: 12/20/2022]
Abstract
Medical waste handlers (MWHs) are at risk of exposure to serious viral infections. No data are available on the prevalence of hepatitis B virus (HBV), hepatitis C virus (HCV) or human immunodeficiency virus (HIV) among MWHs in Libya. During a one-year period (January to December 2004) blood samples from 300 (59 females) MWHs employed by a local contractor in Tripoli and 300 blood samples from non-medical waste handlers (NMWHs) who had no direct or indirect contact with medical waste were examined for HBV, HCV and HIV using enzyme-linked immunosorbent assays. HBV was detected in 7 (2.3%) and 1 (0.3%) and HCV in 8 (2.7%) and 0 (0.0%) of MWHs and NMWHs, respectively. Significant differences were observed in the detection rates of HBV (OR: 7.14; P<0.04) and HCV (OR: undefined; P<0.005) in MWHs when compared with NMWHs. HIV was not detected in both groups. Of the MWHs studied, 21% were immunised against HBV and 7% were trained to handle medical waste. In addition, 99.7% wore overalls, 57.7% thick disposable gloves, 55% boots and 17.7% masks while handling medical waste. In conclusion, prevalence rates of HBV and HCV were significantly higher in MWHs than those in NMWHs examined. Training, immunisation, and post-exposure protection of MWHs, in addition to proper management of medical waste by the health authorities, may significantly reduce the risk of acquiring infectious agents by MWHs in Libya.
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Affiliation(s)
- E Franka
- Faculty of Medicine, Al-Fateh University for Medical Sciences, Tripoli, Libya
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