One of the main fears regarding new SARS-CoV-2 variants is that they might be resistant to immunity granted by vaccines, including RNA vaccines.
What does the Seychelles experience tell us about variants, vaccine efficacy and herd immunity?
Variants of the original SARS-CoV-2 are now in wide circulation. That means the third wave of COVID-19 has come with new questions about the variants, their effects and what might come next.
With changing recommendations about AstraZeneca's COVID-19 vaccine making headlines, many people have questions about its use.
As the US vaccinates millions more people each day, the novel coronavirus works to survive. It does this by mutating. So far, several variants are worrisome. A virologist explains what they are.
COVID-19 variants of concern have changed the game. We need to recognise and act on this to avoid future waves of infections, yet more lockdowns and restrictions, and avoidable illness and death.
The FDA has indicated booster shots, to cover coronavirus variants, won't need to go through lengthy phase 3 clinical trials. Instead, they can be tested in smaller trials, which will save time.
Moving Auckland to level 3 for a week gives health officials time to track down additional cases and shut off chains of transmission. But we should also be prepared for a wider outbreak.