France, Feb. 10 -- Several manufacturers, such as giants Nestle, Danone and Lactalis, have issued recalls of infant formula in more than 60 countries, including France, since December due to a risk of cereulide contamination.

Cereulide, a toxin produced by certain bacteria, is "likely to cause primarily digestive problems, such as vomiting or diarrhoea," according to the French health ministry.

Two criminal investigations have already been opened in Angers and Bordeauxfollowing the deaths of two infants who consumed infant formula recalled by Nestle due to "possible contamination" by a bacterial substance.

The French health ministry said that no "causal link" has yet been established.

According to information and testimonies gathered ...