THE JOURNAL OF CUTANEOUS DISEASES
The first was a physician. . . . [W]hile circumcising a man suffering with chancre of the foreskin, he slightly wounded himself. . . .
One of my patients was infected while attending the confinement of a woman. . . . The following history then came to light: The doctor had been bitten, as he said, by a pet parrot and three days afterwards he was called to a confinement case. . . . The doctor thought he had his wound perfectly sealed with collodion and cotton. The child born seemed perfectly healthy, but shortly after birth developed well marked symptoms of syphilis.
THE ACQUISITION OF SYPHILIS PROFESSIONALLY BY MEDICAL MEN. Arch Dermatol. 2005;141(4):418. doi:10.1001/archderm.141.4.418