Cases in Scotland have stabilised at about 2,500 a day for the last month, an unusual pattern - but why?
For the last month, Covid infection levels in Scotland have been doing something unusual.
A chart showing cases since the arrival of the "second wave" - when mass testing had been firmly established - illustrates how uncommon this is., says there's a basic pattern of ebb and flow which infectious diseases tend to follow. Another way of looking at how Covid-19 is ebbing and flowing in Scotland is by tracking the change in the seven-day average of daily cases.
"It is a bit unusual and maybe it's an indication we're getting to the equilibrium point in Scotland," he says. "When a disease shifts from being epidemic to endemic you get these oscillations. The other thing is that these waves dampen with each oscillation so it's less intense as it approaches the endemic equilibrium," Prof Hunter says.
Perhaps the last month is a signal Covid is approaching an equilibrium, but the professor also thinks there is another avenue worth exploring.
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