Common questions about infectious mononucleosis

Jason Womack1, Marissa Jimenez1

  • 1Rutgers University, Robert Wood Johnson Medical School, New Brunswick, NJ, USA.

Insights

Epstein-Barr virus (EBV) causes infectious mononucleosis (IM), often in young adults. Diagnosis relies on heterophile antibody tests, but early illness may yield false negatives, necessitating further EBV-specific antibody testing.

Area of Science:

  • Virology
  • Infectious Diseases
  • Immunology

Background:

  • Epstein-Barr virus (EBV) is a widespread virus infecting most of the global population.
  • While often asymptomatic, EBV can cause infectious mononucleosis (IM), typically in individuals aged 15-24.
  • IM symptoms include sore throat, fever, fatigue, and lymphadenopathy.

Purpose of the Study:

  • To outline the clinical presentation and diagnostic approaches for Epstein-Barr virus (EBV) infection manifesting as infectious mononucleosis (IM).
  • To review current treatment strategies and highlight potential complications associated with IM.

Main Methods:

  • Review of clinical presentation and diagnostic criteria for IM.
  • Analysis of diagnostic test accuracy, including heterophile antibody and EBV-specific antibody tests.
  • Evaluation of treatment efficacy and complication risks.

Main Results:

  • The heterophile antibody test is the primary diagnostic tool for IM, with 71%-90% accuracy, but can have false negatives early in illness.
  • EBV-specific IgM antibodies confirm infection but are more costly and time-consuming.
  • Symptomatic treatment is standard; glucocorticoids and antivirals offer no proven benefit in reducing illness duration or severity.
  • Splenic rupture is a rare complication, with physical activity restricted for three weeks post-onset to mitigate risk.
  • Airway obstruction is the most common cause of hospitalization in children with IM.

Conclusions:

  • Accurate diagnosis of EBV infection (IM) relies on clinical suspicion and appropriate serological testing, considering test limitations.
  • Management focuses on symptomatic relief and preventing complications like splenic rupture and airway obstruction.
  • Immunocompromised individuals face a higher risk of severe EBV infection.

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