- CDC maps America’s high levels of physical inactivity.
- Public Health screenings begin at three U.S. airports for 2019 novel coronavirus (2019-nCoV).
- CDC activates Emergency Operations Center (EOC) on Monday, January 20, to support public health partners responding to the outbreak caused by a novel (new) coronavirus first identified in Wuhan, Hubei Province, China.
- CDC confirms person-to-person spread of new coronavirus in the United States.
- A CDC-developed laboratory test kit to detect 2019 novel coronavirus (2019-nCoV) begins shipping to select qualified U.S. and international laboratories.
- The World Health Organization (WHO) names the new disease COVID-19.
- CDC launches the SARS-CoV-2 Sequencing for Public Health Emergency Response, Epidemiology, and Surveillance (SPHERES) consortium, expanding the use of whole-genome sequencing (WGS) of the COVID-19 virus.
- June 25 marks the end of the 2018 Ebola outbreak in the eastern part of DRC.
- CDC discovers active ingredient, nootkatone, for development into new mosquito/tick insecticides and repellents.
- CDC launches a national campaign, Hear Her, which highlights warning signs of pregnancy-related deaths.
- Africa is declared free of wild poliovirus, the second virus eradicated from the continent since smallpox 40 years previously.
- Field Epidemiology Training Program (FETP) celebrates its 40th Anniversary.
- CDC investigates a multi-state outbreak of Salmonella Stanley infections linked to wood ear mushrooms.