ANTITUBERCULOUS IMMUNITY IN MICE VACCINATED WITH KILLED TUBERCLE BACILLI

Abstract
The resistance of white mice to tuberculous infection could be increased by preliminary vaccination with small amounts of tubercle bacilli killed by contact with 2 per cent phenol. Vaccine prepared from a variant strain of human tubercle bacilli unable to multiply in vivo (H37Ra) proved as active as vaccines prepared from either virulent or attenuated strains.