Because the CDC is a criminal enterprise with no accountability and immune from liability.

Letter to Dr. Rochelle P. Walensky, Director, Centers for Disease Control and Prevention

Anaphylaxis is a serious allergic reaction that is rapid in onset and may cause death. It typically causes more than one of the following: an itchy rash, throat or tongue swelling, shortness of breath, vomiting, lightheadedness, low blood pressure. Common causes include insect bites and stings, foods, and medications.