Blue Vaccine

Blue Vaccine is a vaccine in Pathologic (2005).

"An enhanced variant of the "organic vaccine". A prophylactic drug based on a weakened culture of the Sand Plague. Tested by volunteers and judged to be suited for distribution. Restores immunity for 4 hours, rendering a person almost completely insusceptible to the effects of the disease. (Level of immunity - up to 80%. The medicine does small damage to health.)"