Yes, so they've released about a month of data from their initial pilot. They are still looking at the October data from their pilot.
The rate of people who test positive at day seven who don't test positive on the day of arrival is still not insignificant. It's small, but I think it's 0.2% or 0.3% who don't test positive in that first batch, 0.3% exactly.
I think if you capture most of the people in that range, you obviously cut off the people who test positive immediately. That would be the bulk of people who are infectious coming in. It's probably related to their days of experience prior to coming into the country. Then you again have a period of seven days post to deal with people who may have been exposed in transit in airports, people who may have been exposed along their path who should be PCR positive.
You would get the bulk of people if you test them on day seven. Is there a chance of 1% or 2% sneaking out? For sure, but at the end of the day, even the CDC has updated their guidelines for people who are exposed to COVID-19, not in the airline travel but just generally exposed to someone who is probably of the highest risk people out there. That day seven with the test is enough to release someone from quarantine in that sense. So realistically, it should be the same post-flight because the risk is much smaller in that sense. It's not an exact exposure; it's a random chance in that sense.