Imposed entry restrictions for passengers who arrive from or have been in Bahrain, Botswana, Brunei Darussalam, Burundi, Swaziland, Kuwait, Liechtenstein, Moldova, Nigeria, Sierra Leone, Somalia, South Africa. Passengers who are arriving from or have transited through Bahrain, Botswana, Brunei Darussalam, Burundi, Eswatini (Swaziland), Kuwait, Liechtenstein, Moldova (Rep.), Nigeria, Sierra Leone, Somalia, South Africa or Switzerland must have a medical certificate with a negative Coronavirus (COVID-19) nucleic acid test result issued at most 5 days before departure. They must also have a green QR code with an 'HS' mark, or a Health Declaration Form issued by a Chinese embassy or consulate.