Long Would it Take Zombies to Wipe Out Humans?
Zombies are making public health headlines
again. This time, undergraduate students at the University
of Leicester have applied an SIR model to simulate the
spread of a Zombie virus. SIR models are a class of
epidemiological models that predict the spread of disease.
The name derives from equations describing the numbers of
susceptible, infected and recovered people. The results of
the zombie SIR model? In just 100 days, the human
population would be reduced to less than 300, though the
authors concede the original study had limitations. First,
they did not allow humans to kill any zombies, and second,
they did not account for the diminishing population of
humans increasing the amount of time it took zombies to
find their prey. According to LiveScience, a
follow-up paper addressing these limitations resulted in a
much rosier outlook for mankind. After a rapid decline in
the human population, the zombies eventually died off and
the human population began to recover.
Read the original article here:
Coverage on LiveScience here: