共 18 条
[11]
Lee K, 2009, GLOB INST, P1
[12]
The political theatre of the UK's travel ban on South Africa Comment
[J].
LANCET,
2021, 398 (10318)
:2211-2213
[13]
Our World in Data, COR COVID 19 VACC
[15]
Reno C, 2021, VACCINES-BASEL, V9, DOI [10.3390/vaccines9040378, 10.1186/s12889-021-12196-4]
[16]
UK Foreign Travel, FOR TRAV ADV S AFR
[17]
US embassy, US EMBASSY SA TRAVEL