The National Health Service, Food Safety and Quality (Senasica) in Mexico is investigating whether the recent outbreak of salmonella in the United States and Canada is due to Mexican cantaloupe melon production units. Samples are being taken and analyzed at Senasica laboratories and preliminary findings indicate that the company in question has necessary controls for traceability of operations. Mexican authorities are working with the United States and Canada to identify the source of contamination, especially since Mexico is a major supplier of fresh vegetables to the United States.