An Outbreak of Kingella Kingae Infections Complicating a Severe Hand, Foot, And Mouth Disease Outbreak in Nice, France, 2016.

We report the investigation methods for the diagnosis of an epidemic and culture-negative Kingella kingae endocarditis complicating a severe outbreak of hand, foot and mouth disease in a childcare center. The diagnosis was confirmed by polymerase chain reaction testing performed from cardiac tissue. Our findings argue for the systematic investigation of K. kingae outbreaks by using molecular tools in such context.