Monday, April 28, 2008

On April 28

On this day in ...
... 1932, researchers announced the discovery of the 1st effective vaccine for yellow fever, a sometimes fatal disease apparently so named because the skin of some of its victims becomes jaundiced. Discoverer Max Theiler was awarded the Nobel Prize in Medicine in 1951. Carried by mosquito from human to human(virus at left), "yellow fever has increased in the last two decades of the 20th century and is again a serious public health issue."
... 1970, the United States notified Cambodian officials of the decision of President Richard M. Nixon "to approve and assist the South Vietnamese sweep into Cambodia, with the objectives of saving the Government of Premier Lon Nol and destroying Communist hideouts in Cambodian territory," the New York Times reported. U.S. involvement in Cambodia ended, as we've posted, with defeat in the same month 5 years later. After U.S. withdrawal Lon Nol (right), who'd overthrown Cambodia's Prince Sihanouk in March 1970, went into exile in Hawaii.

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