Morbusalkmea, or just alkmea, was a bacterial infection central to the stomach and small intestines. Symptoms included anaemia, black vomit and explosive diarrhea. It was identified in the 14th century by the ADA doctor Alkmeon Hortenus Ambustus. Rehydration therapies and immunisation were its main treatments, and sanitisation in the first and second worlds greatly reduced its prevalence.