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Intrafamilial transmission of Epstein-Barr virus infections
Insights
Epstein-Barr virus (EBV) spreads easily within families. This study found evidence of EBV transmission in 20% of families studied, suggesting significant intrafamilial spread of infectious mononucleosis.
Area of Science:
- Virology
- Epidemiology
- Public Health
Background:
- Epstein-Barr virus (EBV) is a common human herpesvirus.
- Infectious mononucleosis (IM) is a primary manifestation of EBV infection.
- Understanding EBV transmission patterns is crucial for public health interventions.
Purpose of the Study:
- To investigate the rate and patterns of intrafamilial transmission of Epstein-Barr virus (EBV).
- To determine the likelihood of EBV spread among siblings after diagnosis in an index child.
Main Methods:
- Studied 35 families with a child diagnosed with infectious mononucleosis (IM).
- Tested siblings for Epstein-Barr virus (EBV) antibodies.
- Retested susceptible children to detect seroconversion over four to eight weeks.
Main Results:
- Evidence of EBV spread was found in 7 (20%) of the 35 families.
- Concurrent EBV seroconversion occurred in asymptomatic younger siblings in 5 families.
- Two seronegative siblings developed clinical IM during the study period.
Conclusions:
- Significant intrafamilial transmission of infectious mononucleosis (IM) occurs.
- Findings suggest a potential incubation period of four to six weeks for EBV.
- Intrafamilial spread highlights the importance of household contact in EBV transmission.
Abstract:
Intrafamilial transmission of Epstein-Barr virus infections was studied in 35 familial. After infectious mononucleosis was diagnosed in an index child, all siblings were tested for antibodies to EBV. Susceptible children were retested in four to eight weeks. In five families, a concurrent seroconversion was detected in an asymptomatic younger child. Two of 35 seronegative siblings developed clinical IM, confirmed serologically, during the study period. Overall, there evidence of spread in 7 (20%) of the 35 families. We conclude that there is significant intrafamilial transmission of IM. Our findings are compatible with an incubation period of four to six weeks.