Thought i would post this information as it relates to the virus situation in terms of possible protection should that become necessary (hope not)/ ie friends or family with weakened immune response.
This material was an expensive lab rarity only a decade ago until a North Carolina man (University of South Carolina, College of Pharmacy) managed to create a process for extraction at scale. His company is transferpoint.com and the material he (AJ Lanigan) produces is the purest in the world.
Studies and info …
Anthrax-protective effects of yeast beta 1,3 glucans