Sedighe Rafeei Tabatabaaie , Hassan Mojtaba,
Volume 4, Issue 1 (Spring 2001)
Abstract
B.C.G vaccine, with 79 years antiquity is still the most used vaccine around the world. On the average 85 percent of children around the world received this vaccine in 1993. Immunity induction and the rate of effectiveness of this vaccine was reported differently between 2.83% in various studies. This study was done for evaluating the effect of B.C.G in infancy period. After vaccination, the establish scar diameter had been measured and tuberculin test with the 5 unit PPD solution had been performed. B.C.G scar diameter were in 96% of cases or more than 3 millimeters (scar positive) and 4% less than 3 millimeters. Response to tuberculin test had been less than 5 millimeters (negative) in 309 persons 39% and between 5 to 9 millimeters (suspected or vaccinal positive ) in 436 persons (55%) and equal or more than 10 millimeters (positive ) in 49 persons (6%). There had been correlation between the size of B.C.G scar and the severity of tuberculin test.
