“…may be such an agent has been suggested by reports of cases of sarcoidosis occurring after B.C.G. vaccination (Larsen, 1950;Richards and Steingold, 1952;Pfisterer et al, 1954;Birkhauser, 1957;Fried and Genz, 1958;Ellman and Andrews, 1959). It cannot be denied that most or all such cases may be no more than mere coincidence (Tdrnell, 1954).…”