How long do all 7 of us have to quarantine?

WOW, I don't blame you for being confused. Since the latest infection was just yesterday, and if that person was in contact with others in this group, I would follow the quarantine time suggested by the CDC and your state. Test results can help you know when to come out of isolation.

Regeneron antibody cocktail is prophylaxis only for individuals who have been exposed to the virus.

CDC recommends that you all stay away from each other, wash your hands, and other methods for preventing the spread. I suggest having food and other supplies delivered.

If this were to happen to my family and friends we'd all be isolated until the last person tests negative when tested. You can test positive and have no symptoms.

Why are you having this cocktail when you already have tested positive? Some people have fewer and less severe symptoms with the vaccine, but not all.

If there is any severe illness, definitely contact your PCP. Is anyone experience severe illness? How are you feeling?

Hi @luraew4, welcome. You're asking good questions. I agree with @merpreb that this can be confusing. Here are guidelines from the CDC that can help.

- Quarantine and Isolation https://www.cdc.gov/coronavirus/2019-ncov/your-health/quarantine-isolation.html
Even the words "quarantine" and "isolation" can be confusing.

Quarantine = for people who MAY have been exposed and who are not fully vaccinated

Isolation = is used to separate people infected with COVID-19 from those who are not infected.

For answers to your questions see this section
When You Can be Around Others After You Had or Likely Had COVID-19 https://www.cdc.gov/coronavirus/2019-ncov/your-health/quarantine-isolation.html
It outlines all the different factors that your family is experiencing, whether they've been vaccinated or not, whether they have symptoms or not, whether they've tested positive or not, etc.

This video may also help
https://youtu.be/HNgDirLLZm8

The most severe is our 73 year old friend who had heart attack symptoms. She ended up in the emergency room and then an additional night in the hospital. The examining doctor said the virus can attack organs and it did so to her heart. She is positive for Covid and is scheduled for regeneron infusion also. I was not aware that is given when EXPOSED not when actively ill.

Thank you so much for all the information you have provided. I appreciate the quick replies. My husband has CLL and is a patient of the Mayo Rochester. He has and continues to have wonderful care there. He was the third in line that was infected. He was the first to be prescribed Regeneron by urgent care when diagnosed as positive ( also fully vaccinated by Pfizer) He still has a cough. He feels it helped. I didn’t see that much of an improvement. I went back to urgent care 2 days later with a right nostril and right ear infection and was prescribed amoxicillin. I am into my third day of this medication. I’m not sure why we were prescribed the infusion after your information.

I found this dated 8/10/21 on fda.com
The U.S. Food and Drug Administration today revised the emergency use authorization (EUA) for REGEN-COV (casirivimab and imdevimab, administered together) authorizing REGEN-COV for emergency use as post-exposure prophylaxis (prevention) for COVID-19 in adults and pediatric individuals (12 years of age and older weighing at least 40 kg) who are at high risk for progression to severe COVID-19, including hospitalization or death. REGEN-COV is not authorized for pre-exposure prophylaxis to prevent COVID-19 before being exposed to the SARS-CoV-2 virus -- only after exposure to the virus. Health care providers should review the Fact Sheet for detailed information about the use of REGEN-COV for post-exposure prophylaxis.

I'm glad to hear that your husband was fully vaccinated and seems to be responding well to REGEN-COV. You're correct that the FDA recently revised the use of REGEN-COV. "REGEN-COV remains authorized for the treatment of mild-to-moderate COVID-19 in adults and pediatric patients (12 years of age and older weighing at least 40 kg) with positive results of direct SARS-CoV-2 viral testing, and who are at high risk for progression to severe COVID-19, including hospitalization or death."

- FDA authorizes REGEN-COV monoclonal antibody therapy for post-exposure prophylaxis (prevention) for COVID-19 https://www.fda.gov/drugs/drug-safety-and-availability/fda-authorizes-regen-cov-monoclonal-antibody-therapy-post-exposure-prophylaxis-prevention-covid-19

It makes sense that your husband with leukemia was given REGEN-COV. You may also wish to join the Blood Cancers & Disorders group here: https://connect.mayoclinic.org/group/blood-cancers-disorders/

In particular, I invite you to join this discussion:
- CLL - newly diagnosed https://connect.mayoclinic.org/discussion/cll-newly-diagnosed/