The Sin City Plague bacterium was developed by Sov scientists.
It could not survive more than a few minutes on contact with the air. Eight hours later symptoms began to show, including severe bouts of coughing (aiding transmission), skin pustules after sixteen hours, fevers, unconsciousness, bleeding, liquification of tissue. Death would come after about thirty hours. Estimated mortality rate of 90-95%, it was estimated that 90% of the Mega-City One population would be wiped out. Resistant to antibiotics. Spread in aerosol.