Immunocompromised Children with Severe Adenoviral Respiratory Infection

Area of Science:

• Pediatric Infectious Diseases
• Critical Care Medicine
• Immunocompromised Host

Background:

• Adenoviral respiratory infections can be severe, particularly in vulnerable populations.
• Immunocompromised children are at heightened risk for severe outcomes from viral infections.

Purpose of the Study:

• To evaluate the morbidity and case fatality rates of severe adenoviral respiratory infections in immunocompromised children.
• To compare outcomes between immunocompromised and immunocompetent children with severe adenoviral respiratory infections.

Main Methods:

• A combined retrospective-prospective cohort study involving intensive care unit (ICU) admissions.
• Case-control analysis matching immunocompromised patients with immunocompetent controls by age and illness severity.
• Data collected from four children's hospitals between August 2009 and October 2013.

Main Results:

• Eleven of nineteen (58%) immunocompromised patients did not survive to hospital discharge.
• Factors associated with case fatality included the cause of immunosuppression, multiple organ dysfunction syndrome (MODS), and renal replacement therapy.
• Immunocompromised patients showed higher rates of MODS, renal replacement therapy, and mortality compared to controls. 43% of survivors required chronic mechanical ventilation.

Conclusions:

• Severe adenoviral respiratory infections are associated with substantial case fatality in immunocompromised children.
• Significant short-term (e.g., MODS, renal failure) and long-term morbidity (e.g., ventilator dependence) are observed.
• The findings underscore the critical need for vigilant management and potential therapeutic strategies for this patient group.