With regards to recovery and then reinfection…we do not have the answers to that. That is an unknown."
Dr Mike Ryan, Executive Director, WHO Health Emergencies Programme
According to the CDC, the immune response to COVID-19 infection is not yet understood. It is believed, in the short-term, that people who recover from COVID-19 are unlikely to be reinfected with the virus. However, the length of time that someone may be immune is uncertain.
In a recent statement, WHO officials have reported there is no evidence that people who have recovered from COVID-19 and have antibodies are protected from a second infection. In addition, no study has evaluated whether the presence of COVID-19 antibodies confers immunity to subsequent infection by this virus in humans.
COVID-19 testing accuracy
There is also some concern regarding the test for COVID-19 antibodies. A negative test result means that there were no detectable antibodies found in the specimen. However, not all people with confirmed COVID-19 infection have antibodies above the detectable level. The sensitivity of the test to detect virus antibodies determines the accuracy of the results. There have been reports of false positive results, leading people to think they have some measure of protection, when in fact, they do not.
Is this content useful?
Thank you for your feedback.