UNDATED (AP) --Federal regulators say traces of the industrial
chemical melamine have been detected in samples of top-selling U.S.
infant formula. But the government insists the products are safe.

The Food and Drug Administration said last month it was unable
to identify any melamine exposure level as safe for infants. But a
top official now says it would be a "dangerous overreaction" for
parents to stop feeding infant formula to babies who depend on it.

The head of the FDA's Center for Food Safety and Applied
Nutrition, Dr. Stephen Sundlof, says the levels are "extremely
low." The FDA and other experts say the contamination in U.S.-made
formula occurred during the manufacturing process, rather than
intentionally.

In China, melamine has been found in infant formula in far
larger concentrations. Tainted Chinese formulas have been blamed
for killing at least three babies and making at least 50,000 others
ill.