You state:
> they only looked at symptomatic covid cases
Which means the study cannot be used to prove or disprove this claim:
> and misses the asymptomatic carriers
Why is there such a need to hastily dismiss any potential improvement?
> they only looked at symptomatic covid cases
Which means the study cannot be used to prove or disprove this claim:
> and misses the asymptomatic carriers
Why is there such a need to hastily dismiss any potential improvement?
Something that detects 10% of cases and is completely free (using a device people are wearing anyway) is valuable. You can be sure that some of these cases would have been missed by all the other tests, simply because not every one of these cases got any test at all.