Journal
JOURNAL OF INFECTIOUS DISEASES
Volume 182, Issue 6, Pages 1761-1764Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/317624
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The reactivation of cytomegalovirus (CMV) in 71 astronauts was investigated, using polymerase chain reaction. A significantly greater (P < .0001) shedding frequency was found in urine samples from astronauts before spaceflight (10.6%) than in urine from the healthy control subject group (1.2%). Two of 4 astronauts studied during spaceflight shed CMV in urine. A significant increase (P < .0001) in CMV antibody titer, compared with baseline values, was also found 10 days before spaceflight. CMV antibody titer was further increased (P < .001) 3 days after landing, compared with 10 days before the mission. Significant increases in stress hormones were also found after landing, These results demonstrate that CMV reactivation occurred in astronauts before spaceflight and indicate that CMV may further reactivate during spaceflight.
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