Repeated brief encounters with the same person are now considered close contact, according to a tweak to the CDCs definition.Previously, for somebody to be a close contact, they had to remain within six feet of you for a stretch of at least 15 minutes.
The change recognizes that, according torecent research, you dont have to spend 15 minutes with the same person all at once.
If you see the same person multiple times a day for a few minutes at a time, they are still considered a close contact if those encountersadd upto 15 minutes.
Heres the official definition as it stands today:
Someone who was within 6 feet of an infected person for a cumulative total of 15 minutes or more over a 24-hour period* starting from 2 days before illness onset (or, for asymptomatic patients, 2 days prior to test specimen collection) until the time the patient is isolated.
That asterisk leads to a footnote longer than the definition itself, a sign that we are still in mostly-unknown territory when it comes to understanding how the coronavirus works.
The CDC says the above definition is a reasonably good one if youre looking for a concrete rule, but adds that plenty of other factors could be considered.
Youre probably at higher risk if the person had active symptoms at the time, for example, or if they were up in your face rather than five feet away, or if they were shouting or singing.
We still dont know how much protection masks really give us, and when youre considering your contacts with people in your life, you may not realize that youor the other personmay not be wearing a mask appropriately.
For example, you might remember oh yeah, that guy was wearing a mask, but maybe itwasnt fully covering his nose, or maybe it was wet, or made of a bang out of fabric that lets a lot of droplets through.
For all those reasons, masks dont factor into the close contact definition, even though they almost certainlydoprovide a good bit of protection.
Different organizations may have definitions that differ from the one the CDC uses.Gothamist reportsthat New York Citys benchmark is 10 minutes of close contact instead of 15, for example.
The most important thing to know about the CDCs rule change is that we have data that suggests shorter interactions add up.
