RIO DE JANEIRO, BRAZIL - The debate over a Covid-19 immunity passport will gain momentum on the international scene, and may lead Brazil to take a decision. It could suffer isolation if its vaccination pace remains as it stands now, sources in Europe say.
If countries proceed toward a free flow system of passengers based on vaccination, for example, the logic is that a kind of sanitary cordon will be enforced on people who remain out of this tourism, business travel, and international mobility circuit.
Europe is trying to increase its immunization and the USA with President Biden in the . . .