Hon Dr MEGAN WOODS: We have made really good progress looking at that. I think the fact that the returnee in question was only out of her room for a very short period of time has made the tracking much easier throughout the hotel. It's something we take incredibly seriously—that we do have two cases that are genomically linked but that we have not been able to find a common link, either a person-to-person link or a surface-to-person link. So we continue to look at all the options and all the avenues of investigation. 