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Published on: February 23, 2014
Parvovirus B19 outbreak in a children's ward
1Division of Communicable Diseases, Royal Free Hospital and School of Medicine, London, UK.
Insights
Parvovirus B19 outbreaks pose risks to vulnerable populations. During a hospital outbreak, infection control measures were implemented, but their effectiveness in limiting spread remains uncertain.
Area of Science:
- Virology
- Infectious Diseases
- Hospital Epidemiology
Background:
- Parvovirus B19 infection presents significant risks for pregnant women, individuals with hemolytic anemia, and the immunocompromised.
- Managing hospital outbreaks requires balancing patient protection with maintaining essential medical services.
Purpose of the Study:
- To investigate a Parvovirus B19 outbreak in a pediatric ward.
- To assess the infection control measures implemented during the outbreak.
Main Methods:
- Screening of 58 hospital staff members for Parvovirus B19 markers (serum IgM and viraemia).
- Assessment of infection development in susceptible staff and immunocompromised patients.
- Implementation of isolation, immunoglobulin therapy, and ward restrictions.
Main Results:
- 4 of 6 susceptible male staff and 6 of 24 susceptible female staff became infected (p=0.05).
- 1 of 11 infected adults and 2 of 12 immunocompromised patients remained asymptomatic.
- No clear correlation between implemented measures and infection spread limitation was established.
Conclusions:
- Parvovirus B19 can spread asymptomatically in hospital settings.
- The effectiveness of specific infection control interventions during this outbreak could not be definitively determined.
Abstract:
Parvovirus B19 infection can cause severe complications in pregnant women, individuals with haemolytic anaemia, and those who are immunocompromised. In a hospital outbreak of this infection, a balance should be struck between protection of these individuals and the maintenance of medical services. The index case of an outbreak of parvovirus B19 infection among staff and patients of a paediatric ward was not identified. 58 members of staff were screened for B19 markers and 4 of the 6 susceptible men and 6 of the 24 susceptible women became infected (p = 0.05) as defined by serum IgM and viraemia. 1 of the 11 adults (10 members of staff and 1 parent) infected remained symptom-free. 12 immunocompromised patients were also assessed, and symptom-free infection developed in 2 of these. During the outbreak staff with symptoms were put on sick leave, immunocompromised patients (there were none with haemolytic anaemia) were given normal human immunoglobulin and nursed in single rooms by B19 IgG-positive, IgM-negative staff, and the ward was closed to B19 IgG-negative pregnant women. However, the limitation of spread of infection cannot be attributed with certainty to the measures taken.
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