WHO Greek alphabet naming system for Covid explained

Early evidence of infection from the variant suggests that it contains many mutations and that there is a higher risk of reinfection.

The emergence of the new strain has led to many countries imposing travel bans or restrictions on people travelling from nations in southern Africa.

For example, the UK announced, on Thursday, that people travelling from South Africa, Namibia, Zimbabwe, Botswana, Lesotho and Eswatini would not be able to enter the country unless they are UK or Irish nationals, or UK residents.

As of 4.00am on Sunday, Malawi, Mozambique, Zambia and Angola will be added to this list. 

Other countries including the US, Australia, India and France have already announced similar restrictions.