Humans' ability to fight on a microscopic level is widely known throughout the Galactic Alliance. They call it their “Immune System.” But it comes as a shock to their allies that the humans readily seek out microscopic organisms to strengthen their Immune Systems. Probiotics. Apparently de-activated viruses known to be deadly. -- Anon Guest
Humans are toxic. Their skin contains microbiota that many Havenworlders find to be deadly. Some of their allegedly harmless skin diseases have become the accidental ruin of worlds. Thus leading to the rule of: Never leave your livesuit until you're certain everyone is going to live.
We all know the story of the human who spat in a sterile environment and caused a mass disaster.
But what alarmed Galactics all over again was the Human process of Vaccination.
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