The WHO argued against border closures as a method to halt COVID-19 yet nearly every country in the world did them. There reason for not having them is the economic impact that primarily impacts poorer countries that rely heavily on tourism to sustain their poor and middle class workers. Everyone fiddles with mask/no-mask but no media is even bothering to look at the economic impact and lives lost due to unadvised border closures.
https://www.worldbank.org/en/news/press-release/2020/10/07/c...
Penetration of cloth masks = 97%
Penetration of N95 = 44%
"There is uncertainty about the effects of face masks. The low‐moderate certainty of the evidence means our confidence in the effect estimate is limited, and that the true effect may be different from the observed estimate of the effect. The pooled results of randomised trials did not show a clear reduction in respiratory viral infection with the use of medical/surgical masks during seasonal influenza. There were no clear differences between the use of medical/surgical masks compared with N95/P2 respirators in healthcare workers when used in routine care to reduce respiratory viral infection. Hand hygiene is likely to modestly reduce the burden of respiratory illness. Harms associated with physical interventions were under‐investigated."
https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD...