We conclude that only large postchiasmal lesions are likely to cause symptomatic homonymous field defects in MS, usually characterized by rapid recovery. Hemifield VEPs have a low sensitivity for the detection of postchiasmal as compared with prechiasmal abnormalities.
Alternate Titles: Bacille Calmette-GuÃ©rin vaccine, Bacillus Calmette-GuÃ©rin vaccine. BCG vaccine, vaccine against tuberculosis. The BCG vaccine is prepared from a weakened strain of Mycobacterium bovis, a bacteria closely related to M. tuberculosis, which causes the disease.
A vaccine containing Bacille Calmette-GuÃ©rin, an attenuated strain of the bovine tubercle bacillus. The vaccine is used to confer a measure of immunity on people who, on Mantoux or Heaf testing are shown not to have had a primary infection with tuberculosis. It is equally effective in giving protection against leprosy. BCG vaccine is available in a freeze-dried form. The drug is on the WHO official list. (Leon Charles Albert Calmette, 1863â1933, French surgeon, and Camille Guerin, 1872â1961, French veterinary surgeon).