Comparison between infants colonized by ST22-MRSA-IVa and those colonized by other genotypes, June 2009–June 2012, Palermo, Italy.

SD, standard deviation; nCPAP, nasal continuous positive airway pressure.SD，即标准差（standard deviation）；nCPAP，即经鼻持续气道正压通气（nasal continuous positive airway pressure）。