Listen to this articlePARIS - France has lowered the safety limit for cereulide toxin in infant formula, aiming to strengthen protections after several major producers ordered worldwide recalls over contamination concerns, the farm ministry said on Saturday. The lower threshold is likely to lead to further withdrawals in France in the coming days, it added. The recalls illustrate how a single compromised ingredient can spread through the infant nutrition supply chain, despite tight regulation, and cause rapid market jitters. The recalls began last week with Nestle and widened to the French groups Danone and Lactalis, as well as others. On Thursday, the consumer group foodwatch said it had filed a criminal complaint in Paris on behalf of eight families whose babies it says fell ill after consuming contaminated infant formula, claiming companies waited too long to warn the public.