1976 Philadelphia Legionnaires' disease outbreak States Center for Disease Control and Prevention (CDC) in 2017 only use the term Legionnaires' disease to refer to the serious version with pneumonia. CDC investigators quickly discovered outbreaks of respiratory disease caused by "L. pneumophila" dating back to 1959. An outbreak of what was dubbed Pontiac fever occurred in a health department in Pontiac, Michigan in July 1967. No one died. Although caused by the same bacterium, Pontiac fever is a milder ailment than Legionnaires' disease. Pneumonia is absent in those with Pontiac fever. An outbreak of pneumonia in July–August, 1965, at St. Elizabeths Hospital in Washington, DC, which
2018 Équateur province Ebola outbreak 2018), which was the most serious in the country since 1994. The table below indicates the 10 outbreaks that have occurred since 1976: 2018 Équateur province Ebola outbreak The 2018 Équateur province Ebola outbreak occurred in the north-west of the Democratic Republic of the Congo (DRC) from May to July 2018. It was the largest outbreak of Ebola virus disease (EVD) since the West African epidemic of 2013–16, but never spread beyond Équateur province. It was also the first time the rVSV-ZEBOV Ebola vaccine had been used to stop an outbreak, with a total of 3,481 people vaccinated. It was