Maybe your household is among the majority, who experience no symptoms when they get it.
Was your test a nasal swab to see if you have an active infection, or a blood test, to see if you had the disease in the past?
It was the blood test to see if I had it in the past.
I would think anti-bodies would show up if that were the case.
Even if she were asymptomatic she still would have tested positive for the antibodies.
Just had my first Covid test Sat morning, and they did *both* blood & swabs - including swabs in both nostrils. This is because I'm slated for an outpatient procedure on Weds, and the clinic now requires this level of testing before your operation. Wow, what a difference 5-1/2 weeks makes .... at my previous procedure, I was the only one in the clinic who had on a mask and gloves. (Other than the staff who were about to enter the operating room with me, who put them on at the last minute). I asked about the lack of PPE, but they seemed pretty nonchalant about it.