The situation of work-related COVID-19 infection and occupational health and safety measures in Thailand

Introduction: The pandemic of COVID-19 infection is the worst public health problem worldwide. Globally, most of cases are among working population. The aims of this study are to describe the situation of work-related disease in Thailand and currently implemented preventive and control measures. Method(s): The data from the Situation Awareness Team under the Department of Disease Control (DDC) were collected and analysed in September 2020. The Monitoring and Evaluation Team under DDC also conducted a rapid survey to identify any measures enterprises had implemented to protect their employees from the disease. The checklists were applied from the ILO guideline. The survey was conducted via an online questionnaire using Google Form and sent to enterprises and the network of safety officers during 13th-17th April 2020. Fisher's Exact test with p-value was used to compare the percentage of enterprises reported implementation of measures. Result(s): Until the end of September, total cumulative number of COVID-19 infection in Thailand were 3,519 cases (approximately 5.29 per 100,000 populations) and 2,445 cases (69.5%) were domestic infection. Among this group, 2,258 persons (92.4%) were working population, aged 18-60 years. 484 domestic cases (21.4%) were classified as work-related COVID-19 infection. The highest number of work-related infection (122 cases) were among workers who worked in entertainment sector. Regarding the calculation for proportions of number of work-related infection and total number of infected cases in each occupation, almost drivers got infection from their jobs. Other high risk occupations included masseurs (90.9%), flight attendants (87.5%), priests (all religions) (80.0%), and airport staff (78.6%). Regarding the rapid survey, 101 samples responded. Almost all enterprises reported having a policy and implementation of preventive and control measures. Implemented measures included health screening of their workers (97%), work arrangement, e.g., work from home (75.2%), area arrangement for work/social distancing (81.2%), ventilation improvement (59.4%), and provision of masks (100%). Conclusion(s): Most of domestic COVID-19 infection were among working age. Approximately one-fifth of them got infection from work. Occupations, especially working with or contact with foreigners and working in a high density of people, were high-risk factors. Several enterprises had implemented preventive and control measures. Prompt policy advocacy, knowledge-based recommendations and communication with target groups were essential.Copyright © 2022, Mattioli 1885. All rights reserved.

The Smart Safeguard System for COVID-19 to prevent cluster-infection in workplaces.

The ongoing Coronavirus Disease 2019 (COVID-19) broke out in China since December 2019, and rapidly spread worldwide. To contain the disease, unessential businesses had been shut down in several countries to a varying extent. Nowadays, the enterprises are resuming productions and businesses. While the resumption of production is crucial to social development, it elevates the risk of cluster-infections at the workplaces. Guangdong Second Provincial General Hospital therefore set up the Smart Safeguard System for COVID-19, aiming to provide rapid screening and consistent protection to assist the local enterprises with resumption. The system has received positive feedback as being helpful and practical. It has the potential to be widely used to prevent the cluster-infection of COVID-19 at workplaces during the pandemic.

Fitness for work during the COVID-19 disease: principles and suggested assistive tool for protecting workers during the pandemic era.

OBJECTIVE: Amongst the many intricacies engendered by the COVID-19 pandemic was the posed risk of exposure to SARS-COV2 infections among workers and the need to evaluate fitness for work (FFW) of individuals in high exposure groups or those with background morbidity. A designated task force of the Israeli Association of Occupational Medicine has evaluated the relevant literature and published guidelines concerning medical work restrictions for employees in high-risk occupations during the epidemic of novel COVID-19. METHODS: The study depicts a case series of 17 FFW evaluations performed in Maccabi Health Services occupational clinics using the guidelines formulated by the Israeli Occupational Medicine Association. RESULTS: 17 patients, mainly healthcare workers, whose major health hazards were immunodeficiency, respiratory diseases and pregnancy, were assessed in this case series. We present the essential parameters of these FFW evaluations and discuss decision-making in selected cases. CONCLUSIONS: Applying guidelines in various work settings and health risk levels during the SARS-CoV-2 pandemic allows for both patients' health preservation and efficient workforce deployment.

Serological study of healthcare workers in four different hospitals in Madrid (Spain) with no previous history of COVID-19.

OBJECTIVES: Healthcare workers (HCWs) have been one of the most severely affected groups during the COVID-19 pandemic, though few studies have sought to determine the rate of undiagnosed cases among this population. In this study, we aim to determine the rate of undetected infection in HCWs, a potential source of nosocomial infection. METHODS: Serological screening for IgG and IgM antibodies against SARS-CoV-2 was carried out among HCWs from four different hospitals in Madrid, Spain, from 6 April to 25 April 2020; HCWs with a previous diagnosis of infection based on real-time reverse transcriptase-PCR assay performed after presenting compatible symptoms were excluded. Prevalence of IgG and IgM antibodies was calculated among HCWs to obtain the rate of COVID-19 presence of antibodies in each hospital. RESULTS: Of the 7121 HCWs studied, 6344 (89.09%) had not been previously diagnosed with COVID-19. A total of 5995 HCWs finally participated in the study, resulting in a participation rate of 94.49%. A positive IgM or IgG test against COVID-19 was revealed in 16.21% of the HCWs studied (n=972). CONCLUSION: This study reveals the importance of early detection of SARS-CoV-2 infection among HCWs to prevent nosocomial infection and exposure of patients, visitors and workers and the spread of COVID-19 in the overall community.

Mask-associated 'de novo' headache in healthcare workers during the COVID-19 pandemic.

OBJECTIVES: The pandemic caused by the new coronavirus (COVID-19) has changed care activities of health professionals. We analysed the possible association between the appearance of 'de novo' headache according to the type of mask used, the related factors and the impact of the cephalalgia on health professionals. METHODS: Cross-sectional study in a tertiary hospital in Extremadura, Spain. We provided an online questionnaire to healthcare workers during the period of maximum incidence of COVID-19 in our setting. RESULTS: The subjects are n=306, 244 women (79.7%), with an average age of 43 years (range 23-65). Of the total, 129 (42.2%) were physicians, 112 (36.6%) nurses and 65 (21.2%) other health workers. 208 (79.7%) used surgical masks and 53 (20.3%) used filter masks. Of all those surveyed, 158 (51.6%) presented 'de novo' headache. The occurrence of a headache was independently associated with the use of a filter mask, OR 2.14 (95% CI 1.07 to 4.32); being a nurse, OR 2.09 (95% CI 1.18 to 3.72) or another health worker, OR 6.94 (95% CI 3.01 to 16.04); or having a history of asthma, OR 0.29 (95% CI 0.09 to 0.89). According to the type of mask used, there were differences in headache intensity, and the impact of a headache in the subjects who used a filter mask was worse in all the aspects evaluated. CONCLUSION: The appearance of 'de novo' headache is associated with the use of filter masks and is more frequent in certain healthcare workers, causing a greater occupational, family, personal and social impact.

Association between SARS-CoV-2 infection, exposure risk and mental health among a cohort of essential retail workers in the USA.

OBJECTIVES: To investigate SARS-CoV-2 (the virus causing COVID-19) infection and exposure risks among grocery retail workers, and to investigate their mental health state during the pandemic. METHODS: This cross-sectional study was conducted in May 2020 in a single grocery retail store in Massachusetts, USA. We assessed workers' personal/occupational history and perception of COVID-19 by questionnaire. The health outcomes were measured by nasopharyngeal SARS-CoV-2 reverse transcriptase PCR (RT-PCR) results, General Anxiety Disorder-7 (GAD-7) and Patient Health Questionnaire-9 (PHQ-9). RESULTS: Among 104 workers tested, 21 (20%) had positive viral assays. Seventy-six per cent positive cases were asymptomatic. Employees with direct customer exposure had an odds of 5.1 (95% CI 1.1 to 24.8) being tested positive for SARS-CoV-2 after adjustments. As to mental health, the prevalence of anxiety and depression (ie, GAD-7 score >4 or PHQ-9 score >4) was 24% and 8%, respectively. After adjusting for potential confounders, those able to practice social distancing consistently at work had odds of 0.3 (95% CI 0.1 to 0.9) and 0.2 (95% CI 0.03 to 0.99) screening positive for anxiety and depression, respectively. Workers commuting by foot, bike or private cars were less likely to screen positive for depression (OR 0.1, 95% CI 0.02 to 0.7). CONCLUSIONS: In this single store sample, we found a considerable asymptomatic SARS-CoV-2 infection rate among grocery workers. Employees with direct customer exposure were five times more likely to test positive for SARS-CoV-2. Those able to practice social distancing consistently at work had significantly lower risk of anxiety or depression.

COVID-19 risk management at the workplace, fear of infection and fear of transmission of infection among frontline employees.

OBJECTIVES: We compared COVID-19 risk management, fear of infection and fear of transmission of infection among frontline employees working within eldercare, hospital/rehabilitation, psychiatry, childcare and ambulance service and explored if group differences in fear of infection and transmission could be explained by differences in risk management. We also investigated the association of risk management with fear of infection and fear of transmission of infection among eldercare personnel. METHODS: We used cross-sectional questionnaire data collected by the Danish labour union, FOA . Data were collected 5½ weeks after the first case of COVID-19 was registered in Denmark. Data for the first aim included 2623 participants. Data for the second aim included 1680 participants. All independent variables were mutually adjusted and also adjusted for sex, age, job title and region. RESULTS: Fear of infection (49%) and fear of transmitting infection from work to the private sphere (68%) was most frequent in ambulance service. Fear of transmitting infection during work was most frequent in the eldercare (55%). Not all differences in fear of infection and transmission between the five areas of work were explained by differences in risk management. Among eldercare personnel, self-reported exposure to infection and lack of access to test was most consistently associated with fear of infection and fear of transmission, whereas lack of access to personal protective equipment was solely associated with fear of transmission. CONCLUSION: We have illustrated differences and similarities in COVID-19 risk management within five areas of work and provide new insights into factors associated with eldercare workers' fear of infection and fear of transmission of infection.

Occupational factors in the COVID-19 pandemic in Italy: compensation claims applications support establishing an occupational surveillance system.

INTRODUCTION: The SARS-CoV-2 pandemic is an impacting challenge for occupational health. Epidemiological surveillance of COVID-19 includes systematic tracking and reporting of the total cases and deaths, but suitable experiences of surveillance systems for identifying the occupational risk factors involved in the COVID-19 pandemic are still missing, despite the interest for occupational safety and health. METHODS: A methodological approach has been implemented in Italy to estimate the occupational risk of infection, classifying each economic sector as at low, medium-low, medium-high and high risk, based on three parameters: exposure probability, proximity index and aggregation factor. Furthermore, during the epidemic emergency, the Italian Workers' Compensation Authority introduced the notation of COVID-19 work-related infection as an occupational injury and collected compensation claims of workers from the entire national territory. RESULTS: According to compensation claims applications, COVID-19 infection in Italy has been acquired at the workplace in a substantial portion of the total cases (19.4%). The distribution of the economic sectors involved is coherent with the activities classified at risk in the lockdown period. The economic sectors mostly involved were human health and social work activities, but occupational compensation claims also include cases in meat and poultry processing plants workers, store clerks, postal workers, pharmacists and cleaning workers. CONCLUSIONS: There is a need to go towards an occupational surveillance system for COVID-19 cases, including an individual anamnestic analysis of the circumstances in which the infection is acquired, for the prevention of occupational infectious risk, supporting insurance system effectiveness and managing vaccination policies.

Migrant workers and COVID-19.

OBJECTIVES: Daily numbers of COVID-19 in Singapore from March to May 2020, the cause of a surge in cases in April and the national response were examined, and regulations on migrant worker accommodation studied. METHODS: Information was gathered from daily reports provided by the Ministry of Health, Singapore Statues online and a Ministerial statement given at a Parliament sitting on 4 May 2020. RESULTS: A marked escalation in the daily number of new COVID-19 cases was seen in early April 2020. The majority of cases occurred among an estimated 295 000 low-skilled migrant workers living in foreign worker dormitories. As of 6 May 2020, there were 17 758 confirmed COVID-19 cases among dormitory workers (88% of 20 198 nationally confirmed cases). One dormitory housing approximately 13 000 workers had 19.4% of residents infected. The national response included mobilising several government agencies and public volunteers. There was extensive testing of workers in dormitories, segregation of healthy and infected workers, and daily observation for fever and symptoms. Twenty-four dormitories were declared as 'isolation areas', with residents quarantined for 14 days. New housing, for example, vacant public housing flats, military camps, exhibition centres, floating hotels have been provided that will allow for appropriate social distancing. CONCLUSION: The COVID-19 pandemic has highlighted migrant workers as a vulnerable occupational group. Ideally, matters related to inadequate housing of vulnerable migrant workers need to be addressed before a pandemic.