BERLIN, GERMANY: Portrait dated probably 1903 in Berlin of Robert Koch (1843-1910), German bacterioligist, physician and surgeon, who discovered in 1982 the tuberculosis bacillus and in 1883 in Egypt and India the cholera bacillus. He became in 1885 professor and director of the Institute of Hygiene at Berlin, and in 1891 director of the new Institute for infectious diseases. He was awarded in 1905 the Nobel Prize for Physiology or Medicine. (Photo credit should read AFP via Getty Images)
