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This piece comes to you from the mostly coronavirus-free shores of Australia. But the virus is still not eliminated; various places can have an extended run of virus-free days, which can then turn into weeks and months, before the virus suddenly comes back.
There is no better example of this than the reemergence of COVID-19 in New Zealand back in August, after the nation went 100 days without the virus and was widely considered to have eliminated it.
At the time of writing, South Australia just left lockdown after a surge in cases, despite the state shutting its borders to places such as New South Wales and Victoria, and only having handfuls of cases reported each day, if any were reported at all, since April.
According to the recent National Contact Tracing…