205.2 📚 國考版

205.2.0.1 必背 — Rhinovirus

• #1 cause of common cold (50%+)

• 160 serotypes (no vaccine)

• ICAM-1 receptor
• 33°C optimal (nasal passages)
• #1 viral asthma trigger

205.2.0.2 必背 — Parainfluenza + Croup

• PIV-1 + PIV-2 → croup (#1 cause)
• “Inspiratory stridor + barking cough + hoarseness”
• Steeple sign on neck X-ray
• Treatment: dexamethasone for moderate; nebulized epinephrine for severe

205.2.0.3 必背 — HMPV

• Discovered 2001
• 2024-2025 China + Asia surge
• Like RSV (bronchiolitis + pneumonia)
• Supportive only

205.2.0.4 必背 — EV-D68 + AFM

• Acute flaccid myelitis (polio-like)
• 2014 + 2018 + 2022-2024 outbreaks
• 通報 CDC

205.2.0.5 必背 — Common Cold Etiology

• Rhinovirus 50%+
• Coronaviruses 10-30%
• Parainfluenza, RSV, adenovirus, influenza, HMPV, bocavirus minor

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