Again, it depends on whether the antibody responds to changes or not, and whether the tests for the antibodies will need to be adapted, but I think, as some of our other experts have said, there is no current indication of a separate strain. It absolutely has to be monitored, because it's important not just for the antibody tests, but for the vaccine development as well.
If the characteristic of the virus changes, it is possible that the interpretation of the test or how well the test performs also will have to be re-evaluated.