Smaller doses of COVID-19 booster vaccines can provide long-lasting immunity, helping reduce costs and improve access to vaccination, according to new research. The findings could also inform vaccine ...

Because the immune systems of people with inborn errors of immunity (IEI) don't function like everyone else's, it was unclear until now how well COVID-19 vaccinations protected them. In a new study, ...

Smaller doses of COVID-19 booster vaccines can provide long-lasting immunity, helping to reduce costs and improve access to vaccination, according to new research. And the findings could also inform ...

Many scientists around the world do not think herd immunity is achievable because the coronavirus will continue to mutate, escape the protection of vaccines and infect people, Mr Ong said.

Here’s what we’ve learned – and how our understanding has evolved – since the earliest cases of the novel coronavirus were first reported.