How long could I be contagious before a positive virus test?

Southwest Life

How long could I be contagious before a positive virus test?

Also an answer to a question about contact tracing
This 2020 electron microscope image provided by the National Institute of Allergy and Infectious Diseases – Rocky Mountain Laboratories shows SARS-CoV-2 virus particles which causes COVID-19, isolated from a patient in the U.S., emerging from the surface of cells cultured in a lab. On Monday, Oct. 5, 2020, the top U.S. public health agency said that coronavirus can spread greater distances through the air than 6 feet, particularly in poorly ventilated and enclosed spaces. But agency officials continued to say such spread is uncommon, and current social distancing guidelines still make sense.

How long could I be contagious before a positive virus test?

This 2020 electron microscope image provided by the National Institute of Allergy and Infectious Diseases – Rocky Mountain Laboratories shows SARS-CoV-2 virus particles which causes COVID-19, isolated from a patient in the U.S., emerging from the surface of cells cultured in a lab. On Monday, Oct. 5, 2020, the top U.S. public health agency said that coronavirus can spread greater distances through the air than 6 feet, particularly in poorly ventilated and enclosed spaces. But agency officials continued to say such spread is uncommon, and current social distancing guidelines still make sense.
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