One of the newest and most hopeful weapons in the fight against polio is a blood fraction called gamma globulin. Doctors have known for several years that it is a rich storehouse of disease-fighting ...

The number of poliomyelitis cases reported in the U.S. as a whole was running about 8% ahead of last year: 2,543 cases since the disease year began April 1, as against 2,361. Local health officers ...