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An In vitro Model to Study Immune Responses of Human Peripheral Blood Mononuclear Cells to Human Respiratory Syncytial Virus Infection
Published on: December 10, 2013
Respiratory syncytial virus (RSV) outbreak in the NICU: description of eight cases
1Department of Pediatrics, King Khaled University Hospital-King Saud University, Riyadh, Saudi Arabia. ramkilani@yahoo.com
Insights
Preterm infants, especially those born earlier, face higher risks during respiratory syncytial virus (RSV) outbreaks in neonatal ICUs. These vulnerable infants experienced increased illness, severe complications, and mortality, underscoring the need for targeted prevention.
Area of Science:
- Neonatology
- Pediatric Infectious Diseases
- Virology
Background:
- Respiratory syncytial virus (RSV) is a significant nosocomial pathogen in pediatric settings.
- Term neonates typically have lower symptomatic RSV infection rates due to maternal antibodies.
- Neonatal intensive care units (NICUs) are vulnerable environments for RSV transmission.
Purpose of the Study:
- To investigate the attack rate and clinical outcomes of RSV infection in neonates during an outbreak.
- To compare RSV susceptibility between term and preterm infants in a NICU setting.
- To evaluate the impact of gestational age on RSV severity in neonates.
Main Methods:
- Retrospective analysis of an RSV outbreak in a NICU.
- Categorization of infants based on gestational age (term vs. preterm).
- Monitoring of RSV infection status, clinical presentation, and outcomes.
Main Results:
- Preterm infants (gestational age 28 +/- 2 weeks) had a higher RSV attack rate compared to term infants (gestational age 34 +/- 5 weeks).
- Four preterm infants developed severe RSV illness requiring mechanical ventilation.
- Two preterm infants developed acute respiratory distress syndrome (ARDS), with one fatality.
Conclusions:
- Preterm infants, particularly those with lower gestational ages, are at increased risk of severe RSV infection and adverse outcomes in the NICU.
- RSV outbreaks in NICUs pose a significant threat to vulnerable preterm populations.
- Effective control measures are crucial for mitigating RSV transmission and impact in neonatal units.
Abstract:
Respiratory syncytial virus (RSV) has been recognized as a major nosocomial hazard on pediatric wards. Because of maternally acquired antibodies, symptomatic RSV infection is rare in term neonates. During an outbreak of RSV in our neonatal ICU, 12 infants (gestational age = 34 +/- 5 weeks) remained RSV negative. In contrast, eight preterm infants (gestational age = 28 +/- 2 weeks) became RSV positive. Four infants became very sick with RSV and required mechanical ventilation and support. Acute respiratory distress syndrome (ARDS) developed in two of them resulting in death of one of them. Control measures were effective in controlling the outbreak. We conclude that during an RSV outbreak in the neonatal ICU, the attack rate is higher in preterm infants born at lower gestational age resulting in significant mortality and morbidity.
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