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Separation of Immune Cell Subpopulations in Peripheral Blood Samples from Children with Infectious Mononucleosis
Published on: September 7, 2022
Infectious Mononucleosis
Henry H Balfour1, Madeline R Meirhaeghe2
1Department of Laboratory Medicine and Pathology, Department of Pediatrics, University of Minnesota, University of Minnesota Medical School, Minneapolis, MN, 55455, USA. balfo001@umn.edu.
Abstract:
Infectious mononucleosis is a clinical entity characterized by a sore throat, cervical lymph node enlargement, fatigue, and fever most often seen in adolescents and young adults. Infectious mononucleosis is most often caused by a primary Epstein-Barr virus (EBV) infection. EBV is a γ-herpesvirus that infects at least 90% of the population worldwide. The virus is spread by intimate oral contact among teenagers and young adults. How preadolescents acquire the virus is not known. A typical clinical presentation with a positive heterophile antibody test is usually sufficient to make the diagnosis, but heterophile antibodies are not specific and do not develop in some patients, especially preadolescent children. EBV-specific antibody profiles are the best choice for confirming and staging EBV infection. Besides causing acute illness during primary infection, there can also be long-term consequences from acquiring this virus, such as certain cancers and autoimmune diseases, as well as complications of primary immunodeficiency in persons with certain genetic mutations. Future challenges are to develop prophylactic and therapeutic vaccines and effective specific treatment strategies.
Insights
Infectious mononucleosis, often caused by Epstein-Barr virus (EBV), presents with common symptoms in young adults. EBV-specific antibody profiles are crucial for accurate diagnosis and staging of this widespread infection.
Area of Science:
- Virology
- Immunology
- Infectious Diseases
Background:
- Infectious mononucleosis is a common illness characterized by sore throat, fatigue, fever, and swollen lymph nodes.
- It is primarily caused by Epstein-Barr virus (EBV), a ubiquitous gamma herpesvirus infecting over 90% of the global population.
- Transmission typically occurs through oral contact in adolescents and young adults, with acquisition routes in preadolescents remaining unclear.
Purpose of the Study:
- To summarize the clinical presentation and diagnosis of infectious mononucleosis.
- To highlight the role of Epstein-Barr virus (EBV) in the disease.
- To discuss diagnostic challenges and long-term implications of EBV infection.
Main Methods:
- Clinical presentation analysis.
- Heterophile antibody testing.
- EBV-specific antibody profiling for diagnosis and staging.
Main Results:
- Infectious mononucleosis is commonly diagnosed based on clinical symptoms and heterophile antibody tests.
- Heterophile antibodies lack specificity and may not be present in all patients, particularly children.
- EBV-specific antibody profiles offer superior accuracy for confirming and staging EBV infections.
Conclusions:
- Accurate diagnosis of infectious mononucleosis relies on a combination of clinical signs and serological testing.
- EBV-specific antibody profiles are the definitive method for confirming EBV infection and determining its stage.
- Long-term consequences of EBV infection include increased risk for certain cancers, autoimmune diseases, and complications in individuals with primary immunodeficiency.
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