RSV Clinical Presentation: Recognizing Severe Disease and Hospitalization Risk

This episode focuses on the clinical picture of RSV in pediatric patients and the challenge of communicating its severity to families and the general public. Dr. Tan describes RSV transmission — direct or close contact with infected secretions, with viability on surfaces for several hours — and outlines patients most vulnerable to severe disease: premature infants, very young infants (especially those in the first two to three months of life), American Indian and Alaska Native infants, and children with chronic lung disease, heart disease, or weakened immune systems.

Dr. Tan walks through the clinical progression: RSV typically starts with rhinitis and cough, then may escalate to tachypnea, wheezing, rales, crackles, retractions, grunting, nasal flaring, and in severe cases, apnea. These escalating symptoms — which lead to hospitalization for lower respiratory tract disease — account for up to 80,000 pediatric hospitalizations per year in children under five, with the majority occurring in infants under 12 months. Children at highest risk for hospitalization include premature infants, those under 12 months, and those with chronic lung disease, heart disease, immunodeficiency, or neuromuscular conditions.

Dr. Creech adds a candid observation about public awareness: historically, "RSV" has meant little to most parents, partly because the clinical syndromes it produces — bronchiolitis, wheezing, lower respiratory infection — don't translate easily into lay language. However, with the advent of maternal vaccination and universal infant prophylaxis, RSV is entering the public lexicon. He urges providers to tie RSV to what families already recognize: a cold that becomes more severe, interferes with feeding, and causes worrying breathing trouble.

In the next episode, "RSV Diagnosis: Why Specific Testing Matters for RSV Management," Dr. Creech and Dr. Simões make a strong case for targeted RSV testing across all care settings, challenging the widespread practice of forgoing diagnostic testing on the assumption that results won't change management.