Again, sub 3% breakthrough.
As far asymptomatic, I don't think it's a thing. I think you can have various levels of sickness, but more I find out, the more I don't believe in asymptomatic. I think some poeple are in denial about symptoms because they can present differently. For example my worst symptoms were coughing and muscle/joint pain. Never ran a fever. My girlfriend was coughing, headache and nausea, her mother was the only one who ran a fever, and her father who was the one we were most concerned about had a concerned about had the mildest symptoms. We all lost our sense of smell, my girlfriend lost her sense of taste too (though I don't think she did, I think she just doesn't know how to compare taste vs. smell) I do think there's different levels of sickness, but I don't believe people are actually asymptomatic. I could be wrong. I know i was told not to get tested for 90 days because you'll test positive again. So it's very real some of these "asymptomatic" cases were people who had mild symptoms and held onto it and didn't get tested until someone around them tested positive.
I know that there's a lot of things involved. But we had an employee test postiive and when they were infectious they didn't infect a single other person in the workforce. And our workforce is something like 80% vaccinated.
2% breakthrough (which all could be unvaccinated) is not something to report as proof against vaccines working.
If this vaccine stops 80% of infections, that's an effective vaccine.