Although Pasteur had little idea how his method worked, he tested it on a boy, Joseph Meister (1876–1940), who was brought to Pasteur by his mother on 6 July 1885.
Kuigi Pasteur ei mõistnud, miks ta meetod töötas, proovis ta seda ühe poisi Joseph Meisteri (1876–1940) peal, kelle tõi Pasteuri juurde 6. juulil 1885 poisi ema.