The World Health Organization (WHO) has quieted international governments that are considering the possibility of introducing the so-called “immunological passport” – an identification that their owners carry antibodies against the coronavirus – because they are still there Indications of the protection they offer against possible re-infection.
The WHO recalls that the development of immunity to a pathogen is a complex and different process for everyone. Although most of the studies the organization is considering show that people who have recovered from the infection have antibodies to the virus, their levels are very low in some subjects, which could make them susceptible to new infections.
However, the WHO welcomes the fact that many countries are currently testing antibodies at the population level or in certain groups, e.g. B. in healthcare, in close contact with known cases or in households. “WHO supports these studies because they are critical to understanding the extent of the infection and the associated risk factors,” said a statement.
At this point in the pandemic, however, the WHO believes that there is insufficient evidence to demonstrate the effectiveness of the “antibody immunity” to ensure the accuracy of this passport or “risk-free certificate” as stated in the call.
“People who believe they are immune to a second infection because they have been released may ignore public health recommendations, so using such certificates can increase the risk of continuous transmission,” the agency concludes.