[ WP ] Despite being peaceful , humans are universally feared through out the galaxy as harbingers of death . They are hosts to the most dangerous diseases and bacteria ever discovered . Average number of fatalities from a single human exposure is ~8,000 with some exceptions . Avoid at all costs .

Fire. 
 
 Humans always dealt with plague by burning the bodies, and houses. 
 
 Why should we think other intelligent species would be any different? It has been protocol on newly discovered planets to nuke settlements at the first sight of diseases we could not treat. 
 
 Humanity's first contact with an intelligent species went uneventful. Trade of knowledge, culture, weaponry, and an introduction to the Confederation. Our second contact did not go so well. It turns out, the Toblerians had a physiology different enough to make them immune to human diseases. They were the exception. 
 
 The first Human delegates to the Confederation were expelled out an airlock, but it was too late. The leaders of the Confederation were killed, factions took that as an opportunity to rebel, and it took nearly 100 years for the Confederation to even return to 75 % of its pre-Human power. They have decided that now it was time to deal with the Human problem. 
 
 The Confederation subjected the outer Human colonies to the initial bombardment. Their nuclear weapons made standard human weaponry look like a firecracker. One bomb and a whole hemisphere is wiped out. 
 
 They offered to let humans return to the Sol System. We refused. The war went our way for a while, having Toblerians on our side, as well as a few more who were immune and saw the opportunity to destroy the Confederation once and for all. Biological attacks involved dropping humans onto key worlds. But the technological difference was too much. The Toblerians no longer exist. 
 
 The Confederation was able to expand and consolidate power during the war because of the omnipresent threat of Humanity. Soon, there was nothing left but Earth. 
 
 The moon was purged, mars a radioactive wasteland, and not a single satellite left in orbit. 
 
 Fire of the Gods. 
 
 It was always said that fire sparked humanity, ironic that it will now be the destruction of all of human civilization. 
 
 Just three bombs, and the fires will purge humans from the universe.
