A seventh child now has a confirmed case of E. coli from drinking unpasteurized milk.
The health department says all the cases are connected to Dee Creek Farm near Woodland. Dairy producers are required to be licensed and inspected monthly, but Dee Creek was never licensed.
Four of the seven children sickened with the potentially deadly bacterium are currently in serious condition.
Officials say criminal charges are possible, and urge anyone with Dee Creek milk to dispose of it immediately.