Final answer:
The injection used against tuberculosis is BCG (bacillus Calmette-Guérin). BCG is a strain of M. bovis that is used as a vaccine to prevent tuberculosis.
Step-by-step explanation:
The injection used against tuberculosis is BCG, which stands for bacillus Calmette-Guérin. BCG is a strain of M. bovis that is used as a vaccine to prevent tuberculosis. It is used more broadly worldwide, particularly in countries with a high prevalence of TB, to prevent childhood tuberculous meningitis and miliary disease.