According to the World Health Organization (WHO), the COVID-19 virus causes mild to moderate respiratory illness in the majority of people who contract it. Coronavirus disease is an infectious disease. Screenings are crucial to preventing future health issues or spotting them early when they may be treated. In the commercial and public sector industries covered by the NIOSH healthcare and social assistance (HCSA) programme, about 20 million individuals work. Hospitals, nursing homes, home care facilities, social assistance, and ambulatory and home healthcare services are some of these sectors. The HCSA programme also covers veterinary medicine/animal care (VM/AC) businesses and businesses that employ people to care for laboratory animals, including zoos and botanical gardens, academic institutions, pharmaceutical and biotechnology firms, and others, due to the many similarities between human and animal healthcare.



