We (doctors included) assumed it was the a cold or the flu until she presented symptoms that are Covid-specific. Loss of smell, and some others. We genuinely don't know if we gave it to her.Your theory is that your wife, who is vaxxed, gave Covid to her mom, who is also vaxxed, because she has Covid like symptoms, which are also the symptoms of a common cold or the flu?
What exactly do you mean by efficacy?Sounds like you also don't believe the vax works to 95%+ efficacy.
They aren't a block from getting infected, they are a block from getting sick.