My understanding is that rapid antigen test positives indicate high viral load, especially if the line is darker rather than lighter. So I would expect her to still be significantly contagious.
Being symptomless does help prevent transmission some, since she won’t be coughing or blowing her nose. But regular talking, and to a lesser extent breathing, are often enough to transmit it.
You didn’t ask this, but if I were you and I wanted her to be able to still visit while minimizing risks, I would consider some or all of the following:
Having her sleep alone unmasked in a room with a HEPA filter (and a window cracked if your weather is mild)
Spending much of your days outdoors with at least surgical quality masks on
Wearing at least N95 quality masks, preferably silicone-sealed N95s (Softseal 3D masks), while indoors together
Using improved ventilation such as HEPA filters, continuous HVAC, and/or open windows if the weather allows, while indoors together.
You could also consider not minimizing risks as much as you theoretically could, especially if you’ve had Covid or a bivalent vaccine within the past four months, don’t have any high risk conditions, have access to Paxlovid, don’t have any other upcoming events you’d hate to miss, and are willing to take extra precautions around vulnerable people for the week or so after she leaves.
My understanding is that rapid antigen test positives indicate high viral load, especially if the line is darker rather than lighter. So I would expect her to still be significantly contagious.
Being symptomless does help prevent transmission some, since she won’t be coughing or blowing her nose. But regular talking, and to a lesser extent breathing, are often enough to transmit it.
You didn’t ask this, but if I were you and I wanted her to be able to still visit while minimizing risks, I would consider some or all of the following:
Having her sleep alone unmasked in a room with a HEPA filter (and a window cracked if your weather is mild)
Spending much of your days outdoors with at least surgical quality masks on
Wearing at least N95 quality masks, preferably silicone-sealed N95s (Softseal 3D masks), while indoors together
Using improved ventilation such as HEPA filters, continuous HVAC, and/or open windows if the weather allows, while indoors together.
You could also consider not minimizing risks as much as you theoretically could, especially if you’ve had Covid or a bivalent vaccine within the past four months, don’t have any high risk conditions, have access to Paxlovid, don’t have any other upcoming events you’d hate to miss, and are willing to take extra precautions around vulnerable people for the week or so after she leaves.