symptoms of upper respiratory tract infection developed in his 18-year-old daughter
and resolved spontaneously within 3 days without
any complications. After admission, the patient’s
condition continued to deteriorate, and he died
on November 18, 2013. Figure 1 shows a timeline
of the main events. Details of the clinical
assessment and hospital course are provided in the
Supplementary Appendix (available with the full
text of this article at NEJM.org), including laboratory
investigations (Table S1), chest radiography
(Fig. S1), and computed tomography (Fig. S2).