Coronavirus disease 2019 (COVID-19) is a viral respiratory illness caused by SARS-CoV-2. During January 21-July 25, 2020, in response to official requests for assistance with COVID-19 emergency public health response activities, CDC deployed 208 teams to assist 55 state, tribal, local, and territorial health departments. CDC deployment data were analyzed to summarize activities by deployed CDC teams in assisting state, tribal, local, and territorial health departments to identify and implement measures to contain SARS-CoV-2 transmission (1). Deployed teams assisted with the investigation of transmission in high-risk congregate settings, such as long-term care facilities (53 deployments; 26% of total), food processing facilities (24; 12%), correctional facilities (12; 6%), and settings that provide services to persons experiencing homelessness (10; 5%). Among the 208 deployed teams, 178 (85%) provided assistance to state health departments, 12 (6%) to tribal health departments, 10 (5%) to local health departments, and eight (4%) to territorial health departments. CDC collaborations with health departments have strengthened local capacity and provided outbreak response support. Collaborations focused attention on health equity issues among disproportionately affected populations (e.g., racial and ethnic minority populations, essential frontline workers, and persons experiencing homelessness) and through a place-based focus (e.g., persons living in rural or frontier areas). These collaborations also facilitated enhanced characterization of COVID-19 epidemiology, directly contributing to CDC data-informed guidance, including guidance for serial testing as a containment strategy in high-risk congregate settings, targeted interventions and prevention efforts among workers at food processing facilities, and social distancing.

Since at least 2015, a major Zika virus epidemic has impacted the Americas and the Caribbean. There is an ongoing risk of Aedes mosquito-borne transmission in more than 90 countries and territories worldwide. In these areas, as well as in places that are not experiencing active outbreaks, workers in a variety of jobs may be exposed to the virus. In addition to outdoor workers in places with ongoing, vector-borne transmission who may be exposed when bitten by Zika-infected mosquitoes, biomedical researchers studying the virus and health care workers and staff in clinical laboratories may encounter blood and infectious body fluids from infected individuals, including travelers from Zika virus-affected areas. Because of potentially serious health outcomes, including reproductive effects, sometimes associated with Zika, the Occupational Safety and Health Administration and National Institute for Occupational Safety and Health previously issued guidance to help US employers protect workers from exposure to the virus on the job. This commentary summarizes the details of these recommendations and explains their rationale, which is important to understand when adapting and implementing workplace controls to prevent occupational Zika virus exposures and infections at individual worksites. The industrial hygiene hierarchy of controls, including elimination and substitution, engineering controls, administrative controls, and safe work practices, and personal protective equipment, serves as a framework for infection prevention practices for at-risk workers discussed here.

Since 2015, the most recent Zika virus (ZIKV) epidemic has spread to more than 80 countries and territories.1-3 More than 42,000 cases have been identified in the United States to date, including at least 37,000 in the US territories (mostly in Puerto Rico and attributable to local transmission).4 As the frequency of new cases has decreased, concern over the situation has waned. However, laboratory and biomedical research workers remain at risk of infection. | | The Occupational Safety and Health Administration (OSHA) and the National Institute for Occupational Safety and Health (NIOSH) within the Centers for Disease Control and Prevention (CDC) received reports of 3 ZIKV exposure incidents among such workers, each with clear links to work tasks, during the recent epidemic. However, we are not aware that they have been described in the literature yet.

NEHA strives to provide up-to-date and relevant information on environmental health and to build partnerships in the profession. In pursuit of these goals, we feature a column from the Environmental Health Services Branch (EHSB) of the Centers for Disease Control and Prevention (CDC) in every issue of the Journal. In these columns, EHSB and guest authors share insights and information about environmental health programs, trends, issues, and resources. The conclusions in this column are those of the author(s) and do not necessarily represent the official position of CDC. CDR Jill Shugart is a senior environmental health specialist and the Emergency Responder Health Monitoring and Surveillance System coordinator for the National Institute for Occupational Safety and Health, Emergency Preparedness and Response Office in Atlanta GA. ERHMS is a framework that allows an organization to monitor the health and safety of emergency responders throughout the predeployment, deployment, and post-deployment phases of a response. The goal of ERHMS is to prevent short- and long-term illness and injury in emergency responders.