Site Details LOCATION Sao Paolo, Brazil Get Directions Site Type CRS CRS Leader Esper Georges Kallas, MD esper.kallas@usp.br Site Trials Mpox Open and enrolling A5418:Study of Tecovirimat for Human Monkeypox Virus (STOMP) A5418 (STOMP) is a study of tecovirimat (also known as TPOXX) for the treatment of human monkeypox virus (HMPXV) disease.