| the extent and importance of sensitization by opportunist mycobacteria in lagos, nigeria. | 3505 school children aged 6 to 15 years were tested with ppds and at the same time one of the following tuberculins, namely, ppdg, ppdpl, ppda, ppdf and ppdy. the tuberculins were prepared from human tubercle bacillus, the gause organism, m. marinum, m. avium, m. fortuitum and m. kansasii respectively. ppdy, ppda and ppdg gave more reactions of greater than 2 mm induration than did ppds. furthermore, tests with ppdy, ppda, ppdg and ppdpl showed a significant proportion of children with reactions ... | 1977 | 414397 |