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How Long After Starting Z Pack For COVID 19 Are You Contagious?

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Posted on Sat, 18 Jul 2020
Twitter Sat, 18 Jul 2020 Answered on
Twitter Wed, 13 Aug 2025 Last reviewed on
Question : How long after starting z pack for COVID 19 are you Contagious
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Answered by Dr. Aaron Branch (54 minutes later)
Brief Answer:
10 days from symptom onset and 3 days after fever and symptoms resolve

Detailed Answer:
Hello, I'm Dr. Branch, thanks for using 'Ask a Doctor'. There is no clear evidence that a z pack affects how long COVID-19 is contagious for, so it would be the same time period as without the z pack. The current evidence suggests that people with COVID-19 are contagious until 10 days after the onset of symptoms, and 3 days after fever has resolved and symptoms of COVID-19 (cough, shortness of breath) are improving. Once both of those criteria are fulfilled, you would be considered to not be contagious.

I hope that helps, please let me know if you have any other questions about that, and I would be glad to discuss it with you further.
Above answer was peer-reviewed by : Dr. Nagamani Ng
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Dr. Aaron Branch

General & Family Physician

Practicing since :2011

Answered : 1196 Questions

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How Long After Starting Z Pack For COVID 19 Are You Contagious?

Brief Answer: 10 days from symptom onset and 3 days after fever and symptoms resolve Detailed Answer: Hello, I'm Dr. Branch, thanks for using 'Ask a Doctor'. There is no clear evidence that a z pack affects how long COVID-19 is contagious for, so it would be the same time period as without the z pack. The current evidence suggests that people with COVID-19 are contagious until 10 days after the onset of symptoms, and 3 days after fever has resolved and symptoms of COVID-19 (cough, shortness of breath) are improving. Once both of those criteria are fulfilled, you would be considered to not be contagious. I hope that helps, please let me know if you have any other questions about that, and I would be glad to discuss it with you further.