A state official said a presumed case of monkeypox was detected in Mexicali.
A blood sample of the Mexicali patient was turned to a Mexican laboratory, secretary of Public Health Adrián Medina said.
The state official explained the patient has a history of travel and risk factors that preliminarily lead to dismissing monkeypox.
However, the blood sample was taken to Mexico City.
Sec. Medina added that another case in Tijuana has already been dismissed as the patient had no symptoms of the illness.
Potential cases must be reported to a federal agency while locally the authorities have to take samples that should be sent to a state laboratory. First monkey pox symptoms include skin injuries in the face, legs and arms, as well as fever, goosebumps, headache, extreme fatigue, and muscle pain.