BA.2.86 – aka Pirola – is causing some worries about future infection spikes.
Experts have theories on why some people may be getting false negatives on Covid tests right now.
The Omicron spin-off XBB.1.5 first emerged in the US.
Pay attention to these common signs of infection that doctors are seeing right now.
″We know that things can quickly get out of hand," Dr Amir Khan warned.
BQ.1 and XBB have received official designations by the UK Health Security Agency.
While an immunity-evading strain is making headlines, it's only part of a much bigger (and more daunting) picture.
The new Covid-19 jab targets Omicron and its subvariants. But does protection fade over time?
Pregnant women, carers and the over 65s can now access their autumn booster jab.
The new Covid jab targets two strains and is expected to be used in the autumn booster programme.