COVID-19 Immunity Passport to Ease Travel Restrictions?

‘Immunity passport’ (also called ''immunity certificate'' or ''immunity license'' has been suggested to certify traveler’ protection from SARS-CoV-2 infection. Some data have demonstrated development of neutralizing antibodies that may protect against reinfection and reduce disease severity in the short-term, and some tests correlate with virus neutralization. More evidence is needed on serologies for such certification to facilitate travel, to...