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COVID-101
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    • COVID-19 Basics
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COVID-19 Basics

What is a coronavirus? How do you catch COVID-19? How long is this going to last? Who is at risk? We teach you the basics so you’re equipped with the right information to make sense of it all.
February 25, 2022
|
Heather Young, PhD MPH
February 25, 2022

I was exposed to someone with COVID-19. Should I get tested?

If you think you’ve been exposed to someone with COVID-19, you might need to quarantine, and should get tested if any symptoms develop.
January 13, 2022
|
Sasha Baumann, MSc
January 13, 2022

Updated CDC Quarantine & Isolation Guidelines

In December 2021, CDC shortened the quarantine guidelines for people exposed to COVID. Check our summary of the changes.
January 13, 2022
|
Heather Young, PhD MPH
January 13, 2022

Can I come out of quarantine after a negative test?

If you’ve been exposed to COVID-19, you should quarantine at least 5 days. A negative test does not rule out the possibility you’re infected.
December 18, 2021
|
Mimi Ghosh, PhD
December 18, 2021

Do COVID tests work for the Omicron variant?

Yes, the vast majority of currently approved COVID-19 tests can detect the Omicron variant.
December 18, 2021
|
Mimi Ghosh, PhD
December 18, 2021

Is the Delta variant the result of antibody dependent enhancement?

No, there is no evidence that the Delta variant causes antibody dependent enhancement or is the result of antibody dependent enhancement.
December 18, 2021
|
Brad Kern, PhD
December 18, 2021

PCR Test Basics: How They Work

PCR tests detect a specific virus’s RNA, and they are the “gold standard” of COVID-19 testing.
December 3, 2021
|
Gretchen Snoeyenbos Newman, MD
December 3, 2021

Is natural immunity better than vaccine immunity?

No, natural immunity is not better than immunity from the vaccine.
October 29, 2021
|
Brad Kern, PhD
October 29, 2021

Why is the pandemic ongoing if everyone is getting vaccinated?

Low vaccination rates and the early return of “risky” behaviors have allowed the pandemic to continue, despite ongoing vaccination.
October 15, 2021
|
Heather Young, PhD MPH
October 15, 2021

Should I take aspirin to reduce my risk of blood clots from COVID-19?

No, you should not take aspirin to reduce your risk of getting blood clots from COVID-19 unless you have talked to your doctor. Self-treating with aspirin can be dangerous.
October 8, 2021
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Mimi Ghosh, PhD
October 8, 2021

Why are vaccinated people still getting COVID?

Vaccinated people can get Covid-19 if they are exposed to the new, highly transmissible Delta variant.

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Recommended Reading

Start with these important articles, hand-selected by the resident doctors.
Can I get COVID again if I’ve already had it?
How do we know how many people have died of COVID?
Vaccine trials should include Black and brown people.
What is T-Cell Immunity and how does it relate to COVID?
Will COVID-19 be worse in winter?
The Plandemic Video gets it wrong.
Not finding the answers you’re looking for? Ask us a question

COVID-101 is your resource for reliable, easy-to-understand answers to all your questions on the COVID-19 pandemic.

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