Explanation/Reference:
Explanation:
Penicillin and other antibiotics are the most common causal agents for anaphylaxis. Authorities estimate penicillin to produce an allergic or anaphylactic reaction 1 out of every 10,000 times it is used and cause an estimated 500 deaths per year. By contrast, bee stings are responsible for less than 100 deaths annually. Anaphylactic reactions to aspiring and fungi and molds are infrequent and therefore not common causal agents.