Acute febrile respiratory illness in the ICU: reducing disease transmission

Area of Science:

• Infectious Diseases
• Critical Care Medicine
• Public Health

Background:

• Acute febrile respiratory illness (FRI) leading to respiratory failure is a frequent cause of intensive care unit (ICU) admission.
• Viral pneumonia often underlies these cases, with the specific viral cause frequently remaining undiagnosed.
• Emerging viral diseases like SARS and avian influenza manifest as acute FRIs, potentially progressing to acute respiratory distress syndrome (ARDS).

Purpose of the Study:

• To underscore the importance of early recognition of viral etiologies in acute FRI cases progressing to ARDS.
• To highlight the need for systematic approaches to isolation, testing, and public health notification for these infections.
• To improve healthcare worker (HCW) protection, reduce patient-to-patient transmission, and prevent community spread.

Main Methods:

• A systematic review of literature on viral agents causing acute FRI, respiratory failure, and ARDS.
• Analysis of common viral pathogens including seasonal and avian influenza, coronaviruses, RSV, adenovirus, varicella, metapneumovirus, and hantavirus.
• Emphasis on early isolation and diagnostic testing strategies for prompt identification.

Main Results:

• Undiagnosed viral etiologies are common in severe acute FRI cases requiring ICU admission.
• Patients with viral FRI and ARDS pose a high risk for aerosol-generating procedures and prolonged viral shedding.
• A structured approach involving early isolation and testing is essential for managing these infections.

Conclusions:

• Early detection and isolation of viral pathogens causing acute FRI are critical for patient and HCW safety.
• Prompt public health involvement is necessary for controlling outbreaks and preventing wider transmission.
• Implementing systematic diagnostic and isolation protocols can significantly reduce morbidity and mortality associated with viral ARDS.