100 years ago, two Parisian Scientist perform studies on the toxin produced by the tentacles of a local jellyfish, the Portuguese Man of War.
They tried to vaccinate dogs after isolating the toxin in hope of obtaining protection or prophylaxis against the toxin
However, they found out that a very small doses of toxin resulted in a new dramatic illness that involves breathing difficulties resulting in death within 30 mins.
Hence, both scientists termed "Anaphylaxis" or against protection.
They rightly concluded that the immune system first becomes sensitized to the allergen over several weeks and upon re-exposure to the same allergen may result in severe reaction.
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