French baby-milk maker Lactalis on Thursday ordered the recall of all of the production of one of its factories since February over fears of possible contamination with  salmonella. 

Lactalis, one of the world's top dairy producers, had already recalled around 7,000 tonnes of infant formula milk two weeks ago. 

But in what it described as "a precautionary measure" on Thursday, it had now decided -- in consultation with the health authorities -- to recall "all infant formula and nutritional products manufactured and conditioned in the Craon factory" in north western France.

"Information received from the health authorities as well as the results of initial investigations carried out... led the group to issue a second recall, this time of all products manufactured since February 15, 2017 using a specific drying tower at the factory," the statement said.