1976 Philadelphia Legionnaires' disease outbreak failed. The disease was finally produced in guinea pigs. The CDC announced the discovery at a press conference on January 18, 1977. The bacterium was later named "Legionella pneumophila". "Legionella pneumophila" is the most common cause, but sometimes other species of Legionella bacteria also cause Legionnaires' disease. The terms "Philadelphia fever" and "Legion fever" appear to have been used at the time of the outbreak and for shortly thereafter, although at least one 2008 source which covers disease in a historical narrative sense also included "Legion Fever" as alternate name. Both the World Health Organization in 2018 and the United
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