U.S. health officials are warning doctors to be on the lookout for possible cases of lead poisoning in children. At least 22 toddlers in 14 states have sickened by lead that's linked to tainted pouches of cinnamon apple puree and applesauce.

U.S. health officials are warning doctors to be on the lookout for possible cases of lead poisoning in children after at least 22 toddlers in 14 states were sickened by lead linked to tainted pouches of cinnamon apple puree and applesauce.

Children ages 1 to 3 were affected, and at least one child showed a blood lead level eight times higher than the level that raises concern, the Centers for Disease Control and Prevention said.

There’s no safe level of lead exposure, but the CDC uses a marker of 3.5 micrograms per deciliter to identify children with higher levels than most. The affected children’s blood lead levels ranged from 4 to 29 micrograms per deciliter.

The reported symptoms included headache, nausea, vomiting, diarrhea, a change in activity level and anemia.