It's the 2nd shot in 'anaphylaxis window' (21 days & more from initial prime) that can be harmful, deadly; Latypova's review of Richet's 1913 work; Irene Mavrakakis M.D., "IgE-

Mediated Cytokine Storm in Vaccinated Populations: Call for Further Investigation and Caution Original white paper by Dr. Mavrakakis revised, excellent work by Vinu Arumugham