The World Health Organization (WHO) Saturday confirmed that scientific evidence does not provide certainty that a patient recovered from COVID-19 is protected against a second infection, which leaves no support for the idea of granting “immunity passports.”
‘Coronavirus Did Not Come out of a Laboratory’, WHO Holds
Some governments have claimed that detection of SARS-CoV-2 antibodies in one person could be enough to certify that such a person is immune and will not be able to infect others.
According to their advocates, “immunity passports” could be used to facilitate the elimination of strict quarantines and the resumption of economic activities.
However, most recovered patients develop antibodies against coronavirus, but their presence in the blood may be meager in some cases.
“As of April 24, no study has evaluated whether the presence of SARS-CoV-2 antivirus confers immunity to subsequent infections in humans,” the WHO clarified.
People assuming they are immune to a second infection because they have previously received a positive serology test result may ignore pandemic-related restrictions. As a consequence of this, the use of those passports could increase the risk of transmission.