I don't imagine there are many places around the world where public health units have the time to go out and do the detailed case investigations that we are doing in New Zealand. We might well discover things that other countries haven't experienced because they are not testing the laundry, for example, for COVID. None the less, we are covering off all these possibilities, looking into fomite transmission, and we are also covering off the more likely transmission of human-to-human transmission in the workplace by re-testing the workplace. We have also looked at the whole-genome sequence of the isolate in the three cases that we have identified and seeking to find a match in any New Zealand case. As that hasn't been found, we're now searching international databases to confirm there is no match.