This is quite something. Of all the positive Covid tests of the 9,000+ students at Cambridge University tested in the week to 6 December, EVERY SINGLE ONE was found to be a False Positive after a second test. That's not conjecture, that's Cambridge's own data. https://t.co/OFSWJVUamN

— Julia Hartley-Brewer (@JuliaHB1) December 9, 2020