Figure 2

A transmission map for possible cases of nosocomial transmission ofPneumocystis jirovecii. Genotypes of the mitochondrial large ribosomal subunit (mtLSU) were determined by direct sequencing of nucleotides 85 and 248: genotype 1 = 85C/248C, 2 = 85A/248C, 3 = 85T/248C, and 4 = 85C/248T. A dark grey box indicates the period of hospitalisation during the PCP episode. The thick vertical line is the time when hospital-onset PCP was diagnosed. Patients 49, 58, and 66 stayed in ward 74 during a similar period. Patients 56 and 65 stayed in ward 174 during the same period. No., case number; Hospital-onset PCP marked by a black box; M1, the first medical intensive care unit; M2, second medical intensive care unit; W, ward