www.emedicine.com...
I couldn't find any current information on anyone specifically who has the condition but I found this:
Cases of infant methemoglobinemia have been reported in the United States. The majority of reported cases were in infants under the age of four months and who were fed milk formulas prepared with contaminated well water. A Nebraska survey of physicians reported in the Nebraska Medical Journal in 1981 indicated at least eight cases of infant methemoglobinemia were treated in Nebraska between 1973 and 1978. More recently, two infants with methemoglobinemia were identified by the South Dakota Department of Health. The private well water was found to have a nitrate-nitrogen concentration of 150 mg/l in one instance and 54 mg/l in the other. In Colorado, a case of methemoglobinemia involved an infant ingesting water containing 13.3 mg/l nitrate-nitrogen. No cases have been identified with water at or below the MCL of 10 mg/l nitrate-nitrogen.
I would think its occurence would be rare now with less people getting their water from contaminated natural sources such as wells.


