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Published on: April 2, 2012
Evolution of an adenovirus outbreak in a multidisciplinary children's hospital
M Hatherill1, M Levin, J Lawrenson
1Paediatric Intensive Care Unit, Red Cross Chidren's Hospital, Cape Town, South Africa. hatheril@ich.uct.ac.za
Insights
An adenovirus outbreak spread rapidly in a children's hospital, with hospital-acquired infections being common. Intravenous immunoglobulin (IVIG) did not improve outcomes in this high-risk pediatric population.
Area of Science:
- Pediatric Infectious Diseases
- Hospital Epidemiology
- Viral Outbreaks
Background:
- Adenovirus outbreaks pose significant risks in pediatric healthcare settings.
- High-risk pediatric populations are particularly vulnerable to severe outcomes from viral infections.
Purpose of the Study:
- To document the clinical course and epidemiology of an adenovirus outbreak.
- To assess the impact of hospital-acquired adenovirus infections in a pediatric hospital.
- To evaluate the efficacy of intravenous immunoglobulin (IVIG) in treating adenovirus infections.
Main Methods:
- An observational study was conducted in a 280-bed university hospital.
- Active case finding identified 49 children with adenovirus infection.
- Data collected included demographics, acquisition source, co-morbidities, treatment, and outcomes.
Main Results:
- The outbreak spanned 26 days, with a peak in new cases on day 17.
- Hospital-acquired infections accounted for 53% of cases.
- Mortality was 22% overall, with no significant difference between community- and hospital-acquired infections. IVIG treatment did not demonstrate a significant benefit.
Conclusions:
- Effective infection control measures are crucial to prevent the rapid spread of hospital-acquired adenovirus.
- Adenovirus infections in high-risk pediatric patients, whether community- or hospital-acquired, carry substantial mortality.
- Further research, such as a prospective randomized trial, is needed to confirm the role of IVIG.
Objective:
To describe the course of an evolving adenovirus outbreak in a multidisciplinary children's hospital with a high-risk patient population.
Methods:
Observational study in a 280-bed university hospital during June 2002. Active case finding identified children with adenovirus infection. Data are median (interquartile range) or n (%). Adenovirus infection was diagnosed in 49 children, median age 12 months (4-33).
Results:
New cases were diagnosed over 26 days and peaked on day 17 (n = 15). Total infected inpatients peaked on days 17-21 (n = 36). Twenty-three infections (47%) were community-acquired and 26 (53%) hospital-acquired. Thirty-three children (67%) had a coexistent high-risk condition. Median hospital stay before and after diagnosis was 9 days (3-18) and 9 days (4-29), respectively. Twenty-two children (45%) were admitted to PICU. Overall hospital mortality was 22% (n = 11) and mortality attributed to adenoviral disease 12% (n = 6). Hospital mortality was similar between community- and hospital-acquired infections (22% compared to 23%) (P = 1.0). Twenty children (41%) received intravenous immunoglobulin (IVIG). Children treated with IVIG had a longer hospital stay (median 40 days vs 14 days) than those who did not receive IVIG (P = 0.01). Neither PICU mortality (29% vs 12%), nor hospital mortality (35% vs 14%), differed significantly between IVIG treated and untreated children (P = 0.76 and P = 0.16, respectively).
Conclusion:
The rapid spread of hospital-acquired adenovirus underlines the importance of effective infection control measures. Despite nosocomial infection amongst high-risk patients, mortality was similar to that of community-acquired infection. Administration of immunoglobulin was not associated with demonstrable benefit. A prospective randomized trial would be required to resolve this issue.
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