Epstein-Barr Virus Infection in Children

Introduction to Epstein-Barr Virus Infection in Children

Epstein-Barr virus (EBV) is a ubiquitous human herpesvirus that infects more than 95% of the world's population. It is the primary cause of infectious mononucleosis (IM) and is associated with various malignancies and autoimmune diseases. In children, EBV infections can range from asymptomatic to severe, with clinical manifestations often differing from those seen in adults.

EBV belongs to the Herpesviridae family and is also known as human herpesvirus 4 (HHV-4). It primarily infects B lymphocytes and epithelial cells, establishing lifelong latency in the host. Understanding EBV infections in children is crucial for accurate diagnosis, appropriate management, and recognition of potential long-term complications.



Epstein-Barr Virus Infection in Children
  1. What is the causative agent of Epstein-Barr virus infection?
    Answer: Epstein-Barr virus (EBV), a member of the Herpesviridae family
  2. What is another common name for EBV infection?
    Answer: Infectious mononucleosis or "mono"
  3. At what age do most children acquire primary EBV infection?
    Answer: Before 5 years of age in developing countries; adolescence in developed countries
  4. How is EBV primarily transmitted among children?
    Answer: Through saliva, hence the nickname "kissing disease"
  5. What is the typical incubation period for EBV infection?
    Answer: 4-6 weeks
  6. Which cell type does EBV primarily infect?
    Answer: B lymphocytes
  7. What are the three classic symptoms of infectious mononucleosis?
    Answer: Fever, sore throat, and lymphadenopathy
  8. How long can fatigue persist after acute EBV infection in children?
    Answer: Several weeks to months
  9. What is the most common complication of EBV infection in children?
    Answer: Splenic enlargement (splenomegaly)
  10. Which laboratory test is most specific for acute EBV infection?
    Answer: EBV viral capsid antigen (VCA) IgM antibody
  11. What is the significance of heterophile antibodies in EBV diagnosis?
    Answer: They are present in 85-90% of cases but may be negative in young children
  12. How long can children shed EBV in their saliva after acute infection?
    Answer: Intermittently for months to years
  13. What is the recommended treatment for uncomplicated EBV infection in children?
    Answer: Supportive care, including rest, hydration, and antipyretics
  14. Which medication should be avoided in children with suspected EBV infection?
    Answer: Amoxicillin, due to the risk of developing a rash
  15. What is the role of corticosteroids in treating EBV infection in children?
    Answer: Limited to severe cases with airway obstruction or significant autoimmune complications
  16. How does EBV infection affect liver function in children?
    Answer: It can cause mild to moderate elevation of liver enzymes
  17. What is the risk of EBV reactivation in immunocompetent children?
    Answer: Low, but can occur during periods of stress or immunosuppression
  18. Which malignancy is strongly associated with EBV infection in children?
    Answer: Burkitt lymphoma, especially in endemic areas
  19. How does EBV infection present in infants and young children?
    Answer: Often asymptomatic or with mild, nonspecific symptoms
  20. What is the significance of atypical lymphocytes in EBV infection?
    Answer: They indicate an active immune response to the virus
  21. How long should children with EBV infection avoid contact sports?
    Answer: At least 3-4 weeks or until splenomegaly resolves
  22. What is the risk of EBV transmission through blood transfusion?
    Answer: Low with current blood screening practices
  23. How does EBV infection affect the immune system in children?
    Answer: It causes polyclonal B-cell activation and T-cell expansion
  24. What is the role of antiviral medications in treating EBV infection in children?
    Answer: Limited; not routinely recommended for immunocompetent children
  25. Which autoimmune condition is associated with chronic active EBV infection?
    Answer: Hemophagocytic lymphohistiocytosis (HLH)
  26. How does EBV infection in children contribute to the development of multiple sclerosis?
    Answer: It may increase the risk through molecular mimicry and altered immune responses
  27. What is the significance of EBV nuclear antigen (EBNA) antibodies?
    Answer: They indicate past infection and persist for life
  28. How does EBV infection affect school attendance in children?
    Answer: It can lead to prolonged absences due to fatigue and other symptoms
  29. What is the risk of developing chronic fatigue syndrome after EBV infection in children?
    Answer: Low, but slightly increased compared to other infections
  30. How does EBV infection present in children with X-linked lymphoproliferative syndrome?
    Answer: It can cause severe, often fatal, infectious mononucleosis
  31. What is the role of EBV serology in diagnosing nasopharyngeal carcinoma in children?
    Answer: Elevated EBV DNA levels can be a marker for this EBV-associated cancer
  32. How does EBV infection affect the development of the immune system in young children?
    Answer: It plays a role in shaping the T-cell repertoire and B-cell memory
  33. What is the significance of oral hairy leukoplakia in EBV-infected children?
    Answer: It is a rare manifestation, usually seen in immunocompromised patients
  34. How does EBV infection impact vaccination responses in children?
    Answer: It may temporarily reduce responses to some vaccines
  35. What is the role of EBV in the development of post-transplant lymphoproliferative disorder in children?
    Answer: It is a major causative agent, especially in EBV-naive recipients


Disclaimer

The notes provided on Pediatime are generated from online resources and AI sources and have been carefully checked for accuracy. However, these notes are not intended to replace standard textbooks. They are designed to serve as a quick review and revision tool for medical students and professionals, and to aid in theory exam preparation. For comprehensive learning, please refer to recommended textbooks and guidelines.





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