ABSTRACT
Incidence rate (United States): 5 mushroom poisonings per 100,000 persons per year. 95% of toxic mushrooms ingested cannot be identied. 50% of patients are asymptomatic, 25% require treatment, 15% of these have minor toxicity, 5% moderate toxicity, and 0.2% major toxicity. 1-2 patients die of mushroom poisoning each year (United States). 95% of deaths are due to Amanita species ingestions; case fatality rates (CFRs) for Amanita ingestions are 25-50%.
