While BQ.1 and BQ.1.1. represent a small but fast-growing subset of the Omicron variant, BA.5 remains the dominant lineage in the US.

‘BQ.1 COVID variant was first named by scientists in early September, based on sequences spotted across the US and several other countries.’

"When you get variants like that, you look at what their rate of increase is as a relative proportion of the variants, and this has a pretty troublesome doubling time," Dr Anthony Fauci, the US president’s chief medical adviser, told CBS News.





BQ.1: The New Omicron Sub-Variant
BQ.1 variants have already outpaced many rival strains in European nations from England to Germany, which have already seen renewed waves begin.According to the CDC, BQ.1 and BQ.1.1 each currently make up an estimated 5.7 per cent of infections around the country.
Experts have cited the "sizable number of unique mutations" in variants like BQ.1 in speculating that it could evade immunity from prior infections or vaccination.
"However, so far little is known about what impact these mutations might have in affecting the severity of the disease, which would require further studies in animals and humans," said the report.
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Canada also confirmed 20,002 new COVID-19 cases for the week ending October 8, raising concerns over a resurgence, health authorities said.