Transcript:
Dr. Moore can you clarify the difference between isolation and quarantine?
So, for COVID-19 (and for all infectious diseases), if we ask someone to isolate—and this is somewhat technical—you would be a proven case of COVID-19 typically by PCR test (the nasal swab test) or you’d be a probable case in case you didn’t get tested. So, you’d have the clinical symptoms, and you were a high-risk contact. For individuals who are asked to isolate, you typically develop your symptoms around day five to seven from your exposure date. And you’re shedding virus during this period of time, but by day 10 you’re no longer shedding virus if you’re a normal host. If you have a severe case of COVID-19, we have found that you can potentially shed virus up to 20 days. So, typically if you’ve been in the intensive care unit or you were immune suppressed, or you’ve required oxygen; we would ask that you isolate yourself for 20 days. And we have done that for some individuals who’ve been in hospital. The vast majority of individuals, though, clear the virus, no longer shed the virus after day 10. And we don’t, in KFL&A, do any subsequent retesting of individuals because you can shed viral particle, but we have much better science now that you’re no longer infectious. So, it’s key to know we test to define whether you have the illness we don’t now need to retest because we’re confident in the science and that was an important question from our community as well.
Quarantine is just a technical difference between isolation. If you are a case, you are isolated. If you’re a contact, we as you to go into quarantine. And we know that with the vast majority of individuals, if they don’t have any symptoms during this 14-day period, and have a negative test, that they won’t be infectious to anyone else. So, at the time of your exposure, count that as time zero, we monitor you on a regular basis. The vast majority of individuals will have symptoms if they’re going to develop COVID-19 between day five and day seven from the exposure. But there are some that can develop symptoms even later, here; towards day 10, 11, or 12. But the vast majority (over 90 percent) are going to develop symptoms early, early on. And our strategy at KFL&A—let’s say if we have a school-based outbreak or a workplace outbreak—we would do testing at day five to seven cause that’s where we’re going to catch the vast majority of cases, and then we count the 10 days forward; monitoring you. And if you haven’t had a positive test here, we offer a clearance test where around day 10 to day 12, we’re going to have a 99 percent confidence later on that, if you’re testing negative at that point, you won’t get the infection. So, we have a two-testing strategy in certain conditions and outbreaks that we offer for anyone in quarantine. And so, I hope you know the difference now: we isolate cases, we quarantine contacts, and there’s different testing strategies for both.
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