INFECTIOUS DISEASE
ORIGINAL ANTIGENIC SIN (OAS): Why this Year’s Flu Vaccine Could Make You Sicker (Part 1 of the Vaccine Series)
SUMMARY: Original Antigenic Sin (OAS) is a well researched concept dating back to the 1950’s. When a vaccine is mismatched with the virus it is supposed to target there can be 3 possible outcomes: Neutral (No Impact); Good (Limited Protection); or BAD (Original Antigenic Sin). OAS can trigger a situation in which the body is tricked into delaying it’s defense mechanism, resulting in much more severe infection, increased risk for hospitalization & death. […]