Are travel bans effective at stopping the spread of the Omicron variant?

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President Biden’s decision late last week to ban travel from eight southern African countries is unlikely to curb the spread of the Omicron coronavirus variant, an epidemiologist warns, and could even be counterproductive. 

“While it feels attractive to do a travel ban because it shows action and power and protecting our borders, it actually doesn’t really have a lot of public health impact,” Dr. Stefan Baral, an associate professor in the Department of Epidemiology at Johns Hopkins Bloomberg School of Public Health, told Yahoo News.