Figure 1.
A, Timeline showing hospital admissions and clinical histories for patients 1, 2, and 3. B, Neighbor-joined phylogeny (100 bootstraps) comprising the 3 linked cases (patients 1, 2, and 3) and 2 unlinked cases (patients 3 and 4), together with 35 varicella-zoster virus database sequences obtained from GenBank. Abbreviations: Dx, diagnosis; ICU, intensive care unit; Pt, patient; Tx, treatment.