CH. 21 DISEASES OF THE RESPIRATORY TRACT
Immunity: active infection ( life-long immunity Vaccine: viable virus . Shingles (Zoster): Occurs in adults who have had chicken pox as children. Virus remains latent in sensory ganglia. When activated ( lytic cycle ( causes vesicular rash along path nerve. Can reoccur. Red Measles - Rubeola virus. Highly contagious, acute illness. ................
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