Skin scar formation following Bacille Calmette-Gu茅rin (BCG) or smallpox (Vaccinia) vaccination is an established marker of successful vaccination and 'vaccine take'. Potent pathogen-specific (tuberculosis; smallpox) and pathogen-agnostic (protection from diseases unrelated to the intentionally targeted...
scabs fall off in 14 days (no scarring) shingles reactivation of the latent varicella virus can occur at any age but most often later in life varicella virus reactivates and travels down a peripheral nerve fiber to cause a rash outbreak on skin including the chest, abdomen, arm, leg or fa...