If Omicron continues to grow at the present rate,
Omicron case numbers are projected to reach parity with Delta cases in mid-
December (this was dated 10th Dec).
Vaccination is less effective against Omicron than against Delta. But shortly after a booster dose, there is about 70% effectiveness.
I haven't got on to anything about hospitalisation rates vs Delta yet; it may still be early days for that.
"To date, there are no cases of Omicron which are reported as having been hospitalised or
died through routine reporting. As a result, it is not possible to compare the risk of
hospitalisation or death with other variants. However, it should be noted that most of the
cases have a specimen date that is very recent and that there is a lag between onset of
infection and hospitalisation and death. Future updates will assess severe outcomes from
Omicron cases against Delta cases from the same time period."
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I haven't got on to anything about hospitalisation rates vs Delta yet; it may still be early days for that.