Surveillance and molecular typing of Cronobacter spp. in commercial powdered infant formula and follow‐up formula from 2011 to 2013 in Shandong Province,China
1. Shandong Center for Disease Control and Prevention, Jinan, China;2. Academy of Preventive Medicine, Shandong University, Jinan, China;3. Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan, China