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
2017 Democratic Republic of the Congo Ebola virus outbreak is attempting to obtain and review Rwanda's public health rationale and relevant scientific information for implementing these measures. The sub-type "Zaire ebolavirus" has been confirmed in the current outbreak, from the family Filoviridae. It is a single stranded RNA virus, with a 60-90 percent mortality rate (the highest among the strains). An unusually high mortality has been reported in the local pig population. An investigation into potential causes is being considered. Multiple documented outbreaks of Ebola virus disease have occurred in the DRC, with the first being the 1976 outbreak. The virus took its name from the Ebola River near