We didn't use any rapid testing at that time. We still had lots of capacity in our daily testing through our assessment centres in each of those locations, mostly because we were putting our confidence in the PCR test. We've been doing a lot, working through the various models of rapid testing. We're trying to use them in areas where we can't move the test through quickly enough to have adequate turnaround time.
Those locations are very central so we didn't have to worry about that. As well, we wanted to make sure we had the proper quality checks in those testing methods. If you're in high zones of positivity, to use some of those tests that have less sensitivity you may have a certain rate of false negatives, which would not be what we desire. You have to put in testing protocols that would overcome them. You want to use them in the right areas with the right group at the right time, administered by the proper experts, because some are changing from the nasopharyngeal swab to anterior nasal, buccal and oral. Then we were also testing some saliva mouthwash-type methods. A lot of new technology is coming, but we didn't use it for those by-elections.