Fig. 1
Epstein-Barr viremia and NK-cell counts after admission in a critically ill adolescent with a primary EBV infection and previously treated with azathioprine for inflammatory bowel disease. Azathioprine was stopped on day 1. NK-cell counts started to rise after 90 days and were normal after 120 days, coinciding with clearance of the viremia. During the course of illness, CD8+ T-cell counts were 1131 (220–1129 × 106/L) on day 32, 2535 on day 70, 2487 on day 93 and 2537 on day 106