PARIS (Reuters) – French prosecutors have launched a preliminary criminal investigation after E. coli infections linked to a pizza factory for Nestle’s Buitoni brand that possibly led to the death of one person. An investigation was opened on Thursday on charges of the involuntary manslaughter of one person, the injuring of 14 others and breaches of food safety requirements, a spokesperson for the Paris prosecutor’s office said. Nestle France was not immediately available for comment. France’s RMC and BFM radio, which first reported the news, said local health authorities have confirmed 56 E.c…