Just focuss on vaccinating the states around infected ones. Then the virus cant spread if all travel is shut down( but keep canda boreder open as it generates good rvenue and low risk) Then let the virus kill every one in infected states and tey go ggreen again. VICTORY BY ERADICATION!
For the achievement just buy the Gau-18 And blast everyone. Use single shot first until you become overwhelmed and you should only need to reload once! Press + to keep alive.
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