Question

Who had discovered allergy?

Answer 1

The concept of "allergy" was originally introduced in 1906 by the Viennese pediatrician Clemens von Pirquet, after he noticed that patients who had received injections of horse serum or smallpox vaccine usually had quicker, more severe reactions to second injections.

Answer 2

The concept of allergy was given in 1906 by vinnese pediatrician Clemens von pirquet who observed that the people who were getting injections of small pox vaccine usually had quicker more severe reactions to second injection.