5 h. ago Key symptoms of Norovirus to look out for amid 'potential second wave'

The UK Health Security Agency has issued a fresh norovirus warning today over soaring cases in the UK

Science

6 h. ago Norovirus: Health bosses warn of second wave of winter vomiting bug as new strains circulate

Norovirus levels are ‘exceptionally high’ amid a surge of the recently emerged GII.17 strain

Events

7 h. ago UKHSA warns of second norovirus wave after 'exceptionally high' findings

The health agency warns people could get sick a second time

Events

7 h. ago New norovirus alert as officials warn of 'potential second wave' with cases of vomiting bug up 25% in a month

Rates of norovirus, which kills up to 80 Brits every year, are more than two-and-a-half times higher that of the same time last year, fresh figures show.

Events

8 h. ago Experts warn of ‘second norovirus wave’ with people catching bug more than once

Symptoms of norovirus can be more severe in older adults, young children and those who are immunocompromised.

Events

3 d. ago Why norovirus spreads on cruise ships as passengers 'drop like flies' after suspected outbreak

The P&O Iona ship was hit with a 'nightmare' wave of illness, but why does norovirus spread like wildfire on cruises?

Science

3 d. ago A frog: their eyes can detect a single photon of light | Helen Sullivan

Their metamorphosis seems more like a human’s than a butterfly’s – so much is visible, and awkward, whereas the butterfly forms in secretSome species of frog have eyes so sensitive to light that they can detect a single photon. To confirm this, scientists dissected a frog’s eye and removed the lens. If you dissected eyes in biology class, you may remember that a lens is extraordinarily simple and unlike other organs. It is a hard, clearish, object that comes out clean: no blood supply, no blood. It looks like a glass bead, and functions – inanimate – much like glass, and not like most things we find in our body (except maybe teeth, which function like knives). Look through the lens at the classroom around you, you will see it clearly, but upside down.A frog in space, moving further and further from the sun, would eventually start to see not a shrinking star but tiny flashes of light: individual photons. This is because as the photons travel further from their source, they are spread...

Culture