Coronavirus Testing Basics/(Updates)

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Reporting on the State of Connecticut’s Summary of COVID-19 cases, deaths, and tests.

A complete listing of all COVID-19 cases and  analyses by age, hospitalizations, deaths, towns and county is reported by the Connecticut State Department of Health. This information can be found by following the link below:



                                                                                                              Total Reported

                                                                                                              To Date    Change from        Probable 

                                                                                                                                Yesterday            Cases


Westport Residents COVID-19 Positive Reported to the State        341                     +2                     15

Weston Residents COVID-19 Positive Reported to the State            86                      +0                      3

Town specific COVID-19 Tests, Cases, and Deaths can be found at the following link:


Coronavirus Testing Basics

If you are experiencing symptoms and suspect you may have COVID-19, a health care provider can order you a diagnostic test to determine if your symptoms are due to an active coronavirus infection.

Types of Tests

There are two different types of tests – diagnostic tests and antibody tests.


  1. diagnostic test can show if you have an active coronavirus infection and should take steps to quarantine or isolate yourself from others. Currently there are two types of diagnostic tests which detect the virus – molecular tests, such as RT-PCR tests, that detect the virus’s genetic material, and antigen tests that detect specific proteins on the surface of the virus.
  2. An antibody test looks for antibodies that are made by your immune system in response to a threat, such as a specific virus. Antibodies can help fight infections. Antibodies can take several days or weeks to develop after you have an infection and may stay in your blood for several weeks or more after recovery. Because of this, antibody tests should not be used to diagnose an active coronavirus infection. At this time researchers do not know if the presence of antibodies means that you are immune to the coronavirus in the future.


Molecular Test Antigen Test Antibody Test
Also known as… Diagnostic test, viral test, molecular test, nucleic acid amplification test (NAAT), RT-PCR test, LAMP test Rapid diagnostic test

(Some molecular tests are also rapid tests.)


Serological test, serology, blood test, serology test
How the sample is taken… Nasal or throat swab (most tests)

Saliva (a few tests)


Nasal or throat swab Finger stick or blood draw
How long it takes to get results… Same day (some locations)

or up to a week

One hour or less Same day (many locations)

or 1-3 days

Is another test needed… This test is typically highly accurate and usually does not need to be repeated. Positive results are usually highly accurate but negative results may need to be confirmed with a molecular test. Sometimes a second antibody test is needed for accurate results.
What it shows… Diagnoses active coronavirus infection Diagnoses active coronavirus infection Shows if you’ve been infected by coronavirus in the past
What it can’t do… Show if you ever had COVID-19 or were infected with the coronavirus in the past Definitively rule out active coronavirus infection. Antigen tests are more likely to miss an active coronavirus infection compared to molecular tests. Your health care provider may order a molecular test if your antigen test shows a negative result but you have symptoms of COVID-19. Diagnose active coronavirus infection at the time of the test or show that you do not have COVID-19

To learn more about coronavirus testing basics, please visit the U.S. Food & Drug Administration’s website at

To learn more about how to isolate if you are sick, please visit the CDC website.