COVID-19 vaccine

The BA.2 subvariant is now the dominant strain of Covid globally. Here are the signs to watch for.
Coronavirus is catching up with many who've managed to avoid it for two years.
Pfizer is preparing to submit data that shows the effectiveness of a second booster jab.
If you've made it through the past two years without getting sick from the virus, here are a few theories why.
It's too early to tell if the relaxing of Covid rules has led to the rise in cases, but experts advise caution.
From a new Omicron variant to information about the vaccine for kids, here's the latest.
If you're vaccinated, here's what to expect from new Covid-19 waves – and what experts still don't know.
UK scientists are looking for 3,000 volunteers to trial the vaccine targeting Omicron.
Got another positive Covid test? You're not alone.
A new study shows the Covid vaccine does not impact ovarian stimulation, egg quality, embryo development or pregnancy.