title: Influence of psychological stress on upper respiratory infection--a meta-analysis of prospective studies.
abstract: OBJECTIVE
  To quantify the available evidence for the hypothesis that reduced resistance caused by psychological stress may influence the development of clinical disease in those exposed to an infectious agent.
  
  
  METHODS
  We conducted a systematic review and meta-analysis of 27 prospective studies examining the association between psychological stress and subsequent upper respiratory infection (URI).
  
  
  RESULTS
  The results revealed a significant overall main effect of psychological stress on the risk of developing URI (effect size correlation coefficient, 0.21; 95% confidence interval, 0.15-0.27). Further analyses showed that effect sizes for the association did not vary according to type of stress, how URI was assessed, or whether the studies had controlled for preexposure.
  
  
  CONCLUSIONS
  The meta-analytical findings confirmed the hypothesis that psychological stress is associated with increased susceptibility to URI, lending support to an emerging appreciation of the potential importance of psychological factors in infectious disease.
authors: Department of Psychology, University of Aarhus, Aarhus, Denmark.
authors: Anette
authors: A
authors: Pedersen
authors: Robert
authors: R
authors: Zachariae
authors: Dana H
authors: DH
authors: Bovbjerg
mesh_terms: D004198:Disease Susceptibility; D005260:Female; D006801:Humans; D008297:Male; D011446:Prospective Studies; D011598:Psychoneuroimmunology; D012141:Respiratory Tract Infections / Q000453:epidemiology* / Q000209:etiology; D013315:Stress, Psychological / Q000150:complications / Q000453:epidemiology*