LONDON, UNITED KINGDOM - NOVEMBER 30: Two woman wear face masks after the government imposed new restrictions following the discovery of a new highly transmissible Omicron variant of COVID-19, in London, United Kingdom on November 30, 2021. Masks made mandatory in shops and on buses and trains, while new arrivals must take PCR tests. Zuhal Demirci / Anadolu Agency/ABACAPRESS.COM

LONDON, UNITED KINGDOM - NOVEMBER 30: A woman wears a face mask at a market after the government imposed new restrictions following the discovery of a new highly transmissible Omicron variant of COVID-19, in London, United Kingdom on November 30, 2021. Masks made mandatory in shops and on buses and trains, while new arrivals must take PCR tests. Zuhal Demirci / Anadolu Agency/ABACAPRESS.COM

LONDON, UNITED KINGDOM - NOVEMBER 30: A woman wears a face mask at a market after the government imposed new restrictions following the discovery of a new highly transmissible Omicron variant of COVID-19, in London, United Kingdom on November 30, 2021. Masks made mandatory in shops and on buses and trains, while new arrivals must take PCR tests. Zuhal Demirci / Anadolu Agency/ABACAPRESS.COM

LONDON, UNITED KINGDOM - NOVEMBER 30: A man wears a face mask at a market after the government imposed new restrictions following the discovery of a new highly transmissible Omicron variant of COVID-19, in London, United Kingdom on November 30, 2021. Masks made mandatory in shops and on buses and trains, while new arrivals must take PCR tests. Zuhal Demirci / Anadolu Agency/ABACAPRESS.COM

LONDON, UNITED KINGDOM - NOVEMBER 30: A woman wears a face mask at a market after the government imposed new restrictions following the discovery of a new highly transmissible Omicron variant of COVID-19, in London, United Kingdom on November 30, 2021. Masks made mandatory in shops and on buses and trains, while new arrivals must take PCR tests. Zuhal Demirci / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ?L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Commuters wear protective facemasks as they arrive at Stratford station on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Members of the public wear face masks on the high street on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Members of the public wear face masks on the high street on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Members of the public wear face masks at Asda on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Members of the public wear face masks at Asda on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Members of the public wear face masks at Asda on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Members of the public wear face masks at Asda on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Members of the public wear face masks at Asda on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Members of the public wear face masks at Asda on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Members of the public wear face masks at Asda on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Members of the public wear face masks at Asda on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM

LONDON, ENGLAND - NOVEMBER 30: Members of the public wear face masks at Asda on November 30, 2021 in London, England. From today it is mandatory for people to wear facemasks in shops and travelling on public transport or face a ???L200 fine. The Omicron variant of the Covid-19 virus is thought to be more easily transmitted and more resistant to vaccines than previous variants. There have been cases found in England and Scotland and a travel ban from several southern African countries has already been implemented. Kate Green / Anadolu Agency/ABACAPRESS.COM