Pharmaceuticals and Drug Trials
The Oxford jab is also 100% effective at keeping people out of hospital with severe illness.
New research gives a boost to the UK government's decision to delay the second dose of the Pfizer/BioNTech jab, but experts still urge caution.
The jab should be available in the second half of this year and is being manufactured in Teesside.
"Wastage, in the context of where we are, would be tragic."
Amidst the bleak headlines of this week, there have been some positive developments.
Here's why the Pfizer/BioNTech jab took just months to develop.
The UK has secured 7m doses of the coronavirus jab, which trials suggest has a 94.1% efficacy rate.
The high success rate from one part of the study has come under scrutiny this week. Here's what we know.
The UK government has already ordered 100m doses of the vaccine, developed with AstraZeneca.
Scientists found one dosing regimen may actually provide 90% protection against Covid-19.