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Coronavirus Disease 2019 (COVID-19) FAQs
March 20, 2020
Q: Can someone who has had COVID-19 spread the illness to others?
A: The virus that causes COVID-19 is spreading from person-to-person. Someone who is
actively sick with COVID-19 can spread the illness to others. That is why CDC recommends that
these patients be isolated either in the hospital or at home (depending on how sick they are)
until they are better and no longer pose a risk of infecting others.
How long someone is actively sick can vary, so the decision on when to release someone from
isolation is made on a case-by-case basis in consultation with doctors, infection prevention and
control experts, and/or public health officials and involves considering specifics of each situation
including disease severity, illness signs and symptoms, and results of laboratory testing for that
patient.
Someone who has been released from isolation is not considered to pose a risk of infection to
others, according to the medical experts.
Source: CDC – Frequently Asked Questions ‒ https://www.cdc.gov/coronavirus/2019-
ncov/faq.html
Q: Can someone who has been quarantined for COVID-19 spread the illness to others?
A: Quarantine means separating a person or group of people who have been exposed to a
contagious disease, but who have not developed illness (symptoms) from others who have not
been exposed, in order to prevent the possible spread of that disease. As noted above, an
individual with COVID-19 is subject to isolation measures instead.
Quarantine is usually established for the incubation period of the communicable disease, which
is the span of time during which people have developed illness after exposure. For COVID-19,
the period of quarantine is 14 days from the last date of exposure, because 14 days is the
longest incubation period seen for similar coronaviruses. Someone who has been released from
COVID-19 quarantine is not considered a risk for spreading the virus to others because they
have not developed illness during the incubation period.
Source: CDC – Frequently Asked Questions ‒ https://www.cdc.gov/coronavirus/2019-
ncov/faq.html
Q: Can I become infected with COVID-19 if I work with someone who becomes infected
with the virus?
A: While it’s possible to contract COVID-19 from working with someone who has the virus,
people are thought to be most contagious when they are most symptomatic (the sickest). Some
spread might be possible before people show symptoms, and there have been reports of this
occurring with this new coronavirus, but this is not thought to be the main way COVID-19
spreads. Following CDC’s recommendations about social distancing to the extent feasible and
practicing good hygiene can help reduce your risk.
Source: CDC – How It Spreads ‒ https://www.cdc.gov/coronavirus/2019-
ncov/prepare/transmission.html