The tests are for disease. We hope it protects against infection/the ability to spread it. But that's not part of the testing I don't know how many existing va

The tests are for disease. We hope it protects against infection/the ability to spread it. But that's not part of the testing I don't know how many existing vaccines fall into either category here, i.e. whether there are many vaccines that prevent disease but do not even reduce the ability to spread. Would be interesting to know.