On Earth planet, the number of people at most. With rates comparison of birth and death are don’t balanced, people will not become extinct, except there is the X factor that changed.
Something happens when a virus appeared. This virus spreads very fast and cann’t be controlled. In a short time, the virus has killed many people. The virus is highly intelligent and able to mutate rapidly.
Those who have not contracted the virus, live in fear. What exactly is this virus? and how do stop this virus?