BBKA News ran an article in June about a new project to study Deformed Wing Virus in untreated hives: the ReViVe project*. This is part of Professor S. Martin's research group in University of Salford.
I contacted the PhD student who is undertaking the study and offered my two new hives. These have come from a feral swarm and have not been treated or controlled for Varroa.
The two hives are now part of that study. I have sample tubes to fill with bees for testing. I'm wondering how to persuade the live bees into the tubes. It's going to be tricky.