INTERNATIONAL JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL MEDICINE
Year:2020 | Volume:11 | Issue:2|Papers Count:7

This year, the Chinese New Year celebration coincided with the emergence of a SARS-CoV-2 outbreak in the country. The infection soon spread around the world, so that on March 11, 2020, the World Health Organization declared the outbreak a pandemic. In response, many mainstream journals soon began publishing important and relevant articles so that within a short period, numerous articles were available to the very busy health care workers fighting the disease in the front line of the battle....

The novel coronavirus (2019-nCoV) outbreak, which initially began in China, has spread to many countries around the globe, with the number of confirmed cases increasing every day. With a death toll exceeding that of the SARS-CoV outbreak back in 2002 and 2003 in China, 2019-nCoV has led to a public health emergency of international concern, putting all health organizations on high alert. Herein, we present on an overview of the currently available information on the pathogenesis, epidemiology, clinical presentation, diagnosis, and treatment of this virus.

Background: Informal electronic waste (e-waste) recycling is an increasingly important industry worldwide. However, few studies have studied the health risks in this group of workers. Objective: To assess the associations between occupational exposures to metals and genetic instability and renal markers among e-waste recycling workers. Methods: We recruited informal e-waste recycling workers from a community in northeastern Thailand. Participants completed a questionnaire, several health measurements, and provided urine and blood samples, which we then analyzed for a number of metals including lead (Pb), cadmium (Cd), and manganese (Mn). Samples were analyzed for a marker of RNA and DNA damage (ie, oxidative stress), 8-hydroxy-2'-deoxyguanosine (8-OHdG). Glomerular filtration rate (GFR) and fractional excretion of calcium (FECa%) were measured as markers of renal function. Correlations and regression models were used to assess associations between these various factors. Results: We found significantly higher levels of Cd and Pb in blood of men compared with those in women. Men who worked >48 hours/week had significantly higher levels of 8-OHdG compared with men who worked ≤ 48 hours/week. Smoking was significantly associated with higher blood Pb and Cd concentrations among men. Conclusion: Our results suggest gender differences in both blood concentrations of metals associated with e-waste recycling and smoking and highlight potentially elevated oxidative stress associated with longer work hours. Health promotion efforts are needed among informal e-waste recyclers to reduce possible risks of renal damage and cancer.

Background: For many years, several studies drew attention to the possible nephrotoxic effects of silica and distinct renal dysfunction involving glomerular and renal tubules in workers exposed to silica. Objective: To determine the early signs of subclinical nephrotoxic effects among some Egyptian workers exposed to silica in the pottery industry. Methods: This study was carried out in El-Fawakhir handicraft pottery area, in Greater Cairo, Egypt. The studied population included 29 non-smoking male workers occupationally exposed to silica in addition to 35 non-smoking administrative male subjects who represented the comparison group in the study. Measured urinary parameters were concentrations of total protein (TP), microalbumin (Malb), activities of alkaline phosphatase (ALP), g-glutamyl transferase (g-GT), lactate dehydrogenase (LDH), kidney injury molecule-1 (KIM-1), and silicon (Si). Results: Silica-exposed workers showed significantly (p<0. 05) increased levels of urinary TP, Malb, ALP, g-GT, LDH, and KIM-1 compared with the comparison group. Among the silicaexposed group, increased urinary Si levels were positively and significantly correlated (Spearman's ρ >0. 60, p<0. 001 for all variables) with the elevated urinary proteins (including KIM-1) and enzymes levels. All measured urinary parameters were positively and significantly correlated (ρ >0. 75, p<0. 001 for all variables) with the duration of work among exposed subjects. No significant correlation was observed between the measured variables and the age of workers. Conclusion: There is associated subclinical glomerular and tubular affection among silicaexposed workers, which is related to the duration and intensity of exposure.

Background: Sleep disorders and excessive daytime sleepiness negatively affect employees' safety performance. Objective: To investigate the relationship between excessive daytime sleepiness with obstructive sleep apnea and safety performance at an oil construction company in Iran. Methods: 661 employees consented to participate in this study. Excessive daytime sleepiness was measured with the STOP-BANG questionnaire and Epworth Sleepiness Scale (ESS). To determine how sleepiness would affect the studied occupational incidents, accidents causing injury and near misses, both reactive data and proactive safety performance indices were measured. Demographic and predictor variables were analyzed with hierarchical multiple linear regression. Results: Employees who met the criteria of excessive daytime sleepiness and obstructive sleep apnea had significantly poorer safety performance indicators. STOP-BANG and ESS were significant predictors of safety compliance (β 0. 228 and 0. 370, respectively), safety participation (β 0. 210 and 0. 144, respectively), and overall safety behavior (β 0. 332 and 0. 213, respectively). Further, occupational incidents were 2. 5 times higher in workers with indicators of excessive daytime sleepiness and 2 times higher in those with obstructive sleep apnea compared with those without. Conclusion: These findings confirmed that excessive daytime sleepiness is a serious safety hazard, and that both reactive and proactive measures are important to understand the relative contribution of predictor variables.

In a short span, a novel coronavirus (SARS-CoV-2) has captured global consciousness by significantly affecting the day-to-day life of humans and emerged as a public health emergency. Undoubtedly, it indicates that lessons learnt from the past epidemics of coronaviruses such as the Middle East Respiratory Syndrome (MERS) and Severe Acute Respiratory Syndrome (SARS), had not enough and thus left us ill-prepared to deal with the challenges that COVID-19 pandemic is currently posing. Currently, as a global pandemic, COVID-19 poses major challenges and thus forcing the entire world to lockdown. However, the disease has prepared humankind in facing such outbreaks at present as well as in the future. Besides, it has also taught numerous lessons that are worth considering and implementing to make the world a better reality.

Wastewater of dental units, due to the use of amalgam, chemical solutions for radiographic film processing, prosthetic appliances, etc, contains various heavy metals including mercury, silver, nickel, lead, copper, chromium, and cadmium. All these heavy metals are hazardous to health and regulatory limits have been set to control them....