The heavily mutated Omicron variant has led to a serious dent in the ability of vaccines to protect us from catching the Covid virus.
At least one person in the UK has died with the Omicron coronavirus variant, the prime minister has said.
Two doses of a Covid vaccine are not enough to stop you catching the Omicron variant, UK scientists have warned.
New Zealand will ban the sale of tobacco to its next generation, in a bid to eventually phase out smoking.
Pfizer and BioNTech have said a booster jab of their coronavirus vaccine promises to be an effective defence against the new Omicron variant.
The impotence pill Viagra may be a useful treatment against Alzheimer's disease, say US researchers who have been studying its effects in the brain.
GLP-1 RA controls blood sugar through 4 key mechanisms, removing the need for injections
The World Health Organization has said people who are unwell or vulnerable should delay travel if they are not completely vaccinated.
The new Covid-19 variant, Omicron, was present in the Netherlands earlier than previously thought, officials say.
A new heavily mutated version of coronavirus has been found that scientists say is of "great concern".
