The Bacillus Calmette–Guérin vaccine is a vaccine primarily used against tuberculosis. It is named after its inventors Albert Calmette and Camille Guérin. In countries where tuberculosis or leprosy is
Microscopic image of the Calmette–Guérin bacillus, Ziehl–Neelsen stain, magnification: 1,000nn
Micrograph showing granulomatous inflammation of bladder neck tissue due to Bacillus Calmette–Guérin used to treat bladder cancer, H&E stain
An apparatus (4–5 cm length, with 9 short needles) used for BCG vaccination in Japan, shown with ampules of BCG and saline
French poster promoting the BCG vaccine