immunity

HuffPost UK reader Lisa asked why people who have had Covid-19 are being told to get vaccinated.
The same study found past Covid-19 infection provides some immunity for at least five months.
The patient, living in Nevada, was infected with two variants of the virus – and ended up in hospital the second time.
With the prime minister self-isolating, here's what we know about the potential for reinfection.
Immunity in the UK is “waning quite rapidly”, a new study suggests. Here's what that means.
What is herd immunity? And can you get Covid-19 twice?
Little ones flying the nest for the first time; big ones heading off to secondary school with barely more than a glance back at the gates; the new school year is well underway, which means coughs and colds will no doubt be rearing their ugly heads soon too.
Winter flu season could be a thing of the past, as scientists have developed a new universal flu vaccine. The groundbreaking
The United Nations has been given an ultimatum - pay compensation to individuals affected by the cholera outbreak in Haiti