Why we probably won't get new covid-19 vaccines in 2023
28 December 2022
Any new covid-19 vaccine must be better than the ones we already have, setting a high bar for approval that is not expected to be met in 2023
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Premium
Two covid-19 vaccines are 15 per cent less effective against delta
18 August 2021
A large UK study shows that two doses of the Pfizer or AstraZeneca vaccines provide good protection against symptomatic infections by the delta coronavirus variant, but not as good as against older variants
Covid-19 vaccines: Everything you need to know about the leading shots
11 August 2021
Here’s what the latest data says about the efficacy and side effects of the most-used covid-19 vaccines worldwide, including Oxford/AstraZeneca and Pfizer/BioNTech
Beta covid-19 variant (B.1.351)
16 February 2021
The beta coronavirus variant or B1.351, which was first identified in South Africa
Gamma covid-19 variant (P.1)
16 February 2021
The gamma coronavirus variant or P.1, which appears to have evolved in Brazil
Alpha covid-19 variant (B.1.1.7)
16 February 2021
The alpha coronavirus variant or B.1.1.7, which was first identified in the UK county of Kent
New coronavirus variants
16 February 2021
South Africa rethinks plans after variant evades AstraZeneca vaccine
8 February 2021
South Africa has paused its roll-out of the Oxford/AstraZeneca vaccine because it might not be effective against the South African B.1.351 coronavirus variant – but it is still likely to limit the severity of covid-19
How much does one coronavirus vaccine dose protect you and others?
27 January 2021
From efficacy after one dose, to whether you can still transmit the coronavirus to others and how to find out if the vaccine has worked for you, here's everything you need to know after one dose of the covid-19
EU begins to clamp down on vaccine exports as supplies fall short
26 January 2021
Vaccine-makers are set to deliver fewer coronavirus vaccine doses to the European Union than expected, leading the bloc to require pharmaceutical firms to notify it before exporting vaccines
