Well, it appears nothing is for sure.
From a mom here in BC:
My daughter, in Washington State was planning on coming to visit us this week. She did the rapid test for COVID and was so sure it would be clear she set out.
Half way to the border, she got the results and guess what. She tested positive for COVID, even though she had been doubly vaccinated with Phizer.
She had to turn around and go home. Now her whole family (all fully vaccinated) are quarantined and are being tested today.
From a mom here in BC:
My daughter, in Washington State was planning on coming to visit us this week. She did the rapid test for COVID and was so sure it would be clear she set out.
Half way to the border, she got the results and guess what. She tested positive for COVID, even though she had been doubly vaccinated with Phizer.
She had to turn around and go home. Now her whole family (all fully vaccinated) are quarantined and are being tested today.