Hotels and restaurants in several parts of Kerio Valley have been closed indefinitely following fears of a cholera outbreak in the area.
Two people died on Friday in what health officials in Elgeyo Marakwet confirmed were cases of cholera.
County Health executive Kiprono Chepkok said on Monday that the 60-year-old woman and four-year-old child died at their homes in Marakwet East.
It was reported that the two relied on traditional herbs to cure their diarrhea and vomiting.
Chepkok said cases have been reported in Mogil, Chugor, Chesoi and Chesongoch areas in Marakwet East and Arror in Marakwet West.
He said two out of four people who were admitted at Mogil health centre in Kerio Valley on Sunday were found to be suffering from cholera.