The vaccine is still likely to reduce severe cases and deaths from the South African strain, however.
The verdict, which was based on data from people with an average age of 31, shows that protection may be as low as 10 percent.
The research wasn’t able to determine whether it protects against serious illness or hospitalisation, because this group of people were at low risk of serious illness.
Bowel cancer symptoms: Two ‘most common’ symptoms [INSIGHT]
AstraZeneca blood clot: Five symptoms – call 111 [ADVICE]
Rheumatoid arthritis: Seven less obvious symptoms [TIPS]
South Africa variant – London latest
The variant’s arrival in London is thought to be due to someone travelling into the country from Africa in February.
Everyone in the area is being asked to get a test in a bid to contain the virus.
So far there has been 44 confirmed and 30 probable cases of the variant identified.
Government figures reveal a total of 544 confirmed and probable cases of the variant have been found in the country overall.
It comes amid a loosening of the restrictions in England, which has seen pubs, restaurants and non-essential retail opening for business.
Prime Minister Boris Johnson has urged people to remain cautious and observe the social distancing rules while restrictions are eased.
According to official public advice, you should stay two metres apart from anyone who is not in your household or support bubble where possible, or one metre with extra precautions in place (such as wearing face coverings) if you cannot stay two metres apart.
“You should follow the guidance on how to stop the spread of coronavirus at all times, including if you have been vaccinated against COVID-19,” advises the Government.
A key part of this is wearing a face covering in many indoor settings, such as shops and places of worship, and on public transport, unless you are exempt or have a reasonable excuse, it says.
This article originally appeared on Daily Express :: Life and Style Feed