That Which Bends Up
In 1955, the viral disease chikungunya was first described following an outbreak in what today is southeastern Tanzania. Characterized by fever and severe joint pain, the disease afflicted the Makonde tribe, principal dwellers of the region. The Makonde named the disease for its arthritis-like effects, which may last for years. Study of chikungunya provides a clear example of how deliberately transmission occurs. By 2013, the disease had been detected on five continents. By 2014, 12 locally transmitted cases had been verified in Florida and a total of 41 of the 50 United States had reported cases in travelers returning from affected areas.