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Work-Related Health Effects among Wastewater Treatment Plants Workers

机译:废水处理厂工人中与工作有关的健康影响

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Background: Raw sewage contains various pathogenic organisms including bacteria, viruses, fungus, worms and protozoa. Workers at wastewater treatment plants (WWTPs) are exposed to these organisms as well as to H2S gas causing many health hazards. Objectives: To assess some work-related health effects among WWTPs workers with special emphasis on the most common infections as well as cardiopulmonary disorders. Methods: 43 workers at Berket Al-Sabih WWTPs were studied. An equal number of non-exposed comparison group were also studied. All participants were asked about their personal demographic data, symptoms suggesting infection, respiratory tract impairment and cardiovascular manifestations. Spirometric measurements were made at the end of the work shift. A resting standard 12-lead ECG was also taken for each participant. For those with a positive ECG finding, echocardiography was also performed. Serum examination for antibodies against hepatitis A virus (HAV) and hepatitis E virus (HEV) was also done. A heparinized blood sample to measure sulf-hemoglobin, as an indicator of H 2 S exposure, was taken. Stool was analyzed by polymerase chain reaction (PCR) for Leptospira spirochete. Results: WWTPs workers suffered from body ache, abdominal pain, wheeze, asthma and dyspnea more frequently than the comparison group (p<0.05). An obstructive pattern of pulmonary function impairment and a higher mean sulf-hemoglobin% were significantly more common among WWTPs workers than the comparison group. Antibody levels against HAV and HEV as well as frequency of positive stool PCR test results for L. spirochete were significantly higher among WWTPs workers than the comparison group. The prevalence of left ventricular hypertrophy (LVH) according to ECG and mean ejection fraction (EF) as measured by echocardiography were significantly more frequent in WWTPs workers than in the comparison group. Conclusion: WWTPs workers are high risk of developing various infections and cardiopulmonary diseases.
机译:背景:原始污水中含有多种致病生物,包括细菌,病毒,真菌,蠕虫和原生动物。废水处理厂(WWTP)的工人接触这些生物以及H2S气体,造成许多健康危害。目的:评估污水处理厂工人中与工作有关的健康影响,特别着重于最常见的感染以及心肺疾病。方法:对Berket Al-Sabih污水处理厂的43名工人进行了研究。还研究了相同数量的未暴​​露对照组。所有参与者均被询问有关其个人人口统计数据,暗示感染的症状,呼吸道损害和心血管疾病表现。轮班结束时进行肺活量测量。每位参与者还静息了标准的12导联心电图。对于心电图阳性的患者,还进行了超声心动图检查。还进行了针对甲型肝炎病毒(HAV)和戊型肝炎病毒(HEV)抗体的血清检查。采集肝素化血样以测量硫血红蛋白,作为H 2 S暴露的指标。通过聚合酶链反应(PCR)分析粪螺螺旋体的粪便。结果:污水处理厂工人比对照组更容易遭受身体疼痛,腹痛,喘息,哮喘和呼吸困难(p <0.05)。污水处理厂工人的阻塞性肺功能障碍模式和较高的平均硫-血红蛋白%比例明显高于对照组。 WWTP工人中抗螺旋体和肝炎病毒的抗体水平以及粪便螺旋体阳性粪便PCR检测结果的频率显着高于对照组。与比较组相比,污水处理厂工人根据心电图测量的左心室肥大(LVH)和超声心动图测量的平均射血分数(EF)的发生率明显更高。结论:污水处理厂工人罹患各种感染和心肺疾病的风险很高。

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