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How COVID-19 Spreads

COVID-19 is thought to spread mainly through close contact from person-to-person. Some people without symptoms may be able to spread the virus. We are still learning about how the virus spreads and the severity of illness it causes.


Person-to-person spread

The virus is thought to spread mainly from person-to-person.


  • Between people who are in close contact with one another (within about 6 feet).

  • Through respiratory droplets produced when an infected person coughs, sneezes, or talks.

  • These droplets can land in the mouths or noses of people who are nearby or possibly be inhaled into the lungs.

  • COVID-19 may be spread by people who are not showing symptoms.


The virus spreads easily between people

How easily a virus spreads from person-to-person can vary. Some viruses are highly contagious, like measles, while other viruses do not spread as easily. Another factor is whether the spread is sustained, which means it goes from person-to-person without stopping.

The virus that causes COVID-19 is spreading very easily and sustainably between people. Information from the ongoing COVID-19 pandemic suggests that this virus is spreading more efficiently than influenza, but not as efficiently as measles, which is highly contagious. In general, the more closely a person interacts with others and the longer that interaction, the higher the risk of COVID-19 spread.


The virus may be spread in other ways

It may be possible that a person can get COVID-19 by touching a surface or object that has the virus on it and then touching their own mouth, nose, or possibly their eyes. This is not thought to be the main way the virus spreads, but we are still learning more about how this virus spreads.


Spread between animals and people

  • At this time, the risk of COVID-19 spreading from animals to people is considered to be low. Learn about COVID-19 and pets and other animals.

    • It appears that the virus that causes COVID-19 can spread from people to animals in some situations. CDC is aware of a small number of pets worldwide, including cats and dogs, reported to be infected with the virus that causes COVID-19, mostly after close contact with people with COVID-19. Learn what you should do if you have pets.


Protect yourself and others

The best way to prevent illness is to avoid being exposed to this virus. You can take steps to slow the spread.


Learn more about what you can do to protect yourself and others.

Order a Test Kit Today



Our rapid antibody (serology) test looks for both the IgM (Active COVID-19 infection and IgG (antibodies are present) in a single, rapid blood test.

The presence of IgM antibodies indicates you are currently battling SARS-CoV-2 (Active COVID-19 infection) while the presence of IgG indicates you are in recovery from Coronavirus. (antibodies are present)

The test is conducted by taking a small blood sample, placing it in the well of the cassette and then adding two drops of the buffer to the well. 

Results should appear in 5-8 minutes and are invalid after 15 minutes. 

The sensitivity for detection of IgM (Active COVID-19 infection) was 87.9% with a specificity of 100%, while the detection of IgG (antibodies are present)was 97.2% with a specificity of 100%.




Antibody tests like ours have been used recently in Santa Clara, Los Angeles and New York City to develop a better picture of how the virus has spread. 

If you are curious about how antibody tests work and how they will help us get back to normal, here are a few valuable articles. 


Article from 4-2-2020 about the need for antibody tests: 


Article from 4-28-2020 about what antibody tests tell us about the scope of Coronavirus:

Features and requirements:


  • Detection Window IgM: Symptomatic 3-5 days, Asymptomatic 7 days

  • Sample: Test can work with whole blood, plasma and serum samples.

  • Storage: The kit can be stored at room temperature or refrigerated (4-30°C)(40-86'F).

  • Shelf Life: 24 months from manufacture date



Clinical evaluation was carried out during February 2020 across 10 hospitals and reported on March 12, 2020. Further clinical evaluations are ongoing and will be reported as obtained.


Other Information about COVID-19 from the Mayo Clinic

Screenshot 2020-09-11 at 2.41.26 PM.png

The results show that the testing reagent and reference reagent have equivalent effectiveness in detecting COVID-19 when tested in the same clinical specimens.


Compared with the reference reagent, the positive agreement was 93.87% (95%CI:90.24%~96.46%), the negative agreement was 99.10% (95%CI:97.70%~99.75%) and total agreement was 97.19% (95%CI:95.65%~98.26%). The kappa value of the consistency analysis was 0.94 (95%CI:95.65%~98.26%).


The results of the clinical evaluation show that the two reagents (methods) have a high degree of consistency and equivalent sensitivity and specificity in detecting COVID-19.

Negative: If only the C band is present, the absence of any burgundy color in the both T bands (IgG and IgM) indicates that no anti-COVID-19 antibodies are detected in the specimen. The result is negative.

IgM Positive: In addition to the presence of C band, if only IgM band is developed, the test indicates for the presence of IgM anti-COVID-19 in the specimen. The result is IgM anti-COVID-19 positive.

IgG Positive: In addition to the presence of C band, if only IgG band is developed, the test indicates for the presence of IgG anti-COVID-19 in the specimen. The result is IgG anti-COVID-19 positive.

IgG and IgM Positive: In addition to the presence of C band, both IgG and IgM bands are developed, the test indicates for the presence of both IgG and IgM anti-COVID-19 in the specimen. The result is IgG and IgM anti-COVID-19 positive.


Invalid: Control line fails to appear. Insufficient specimen volume or incorrect procedural techniques are the most likely reasons for control line failure. Review the procedure and repeat the test with a new test cassette.

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