> Even tiny sensitivity would be better than nothing
Not if you imagine that one case on a plane = potential super-spreading event, the plane touches down and then newly infected people go in every direction.
Your hypothetical test with tiny sensitivity is pointless, in this regard: it has a (less than) tiny chance of preventing each risky passenger. In my view, any kind of low-sensitivity testing before departure is theatre: it won't make any difference in preventing new infection from breaking out.
The government of the country that I am in agrees, and requires a negative PCR test.
Not if you imagine that one case on a plane = potential super-spreading event, the plane touches down and then newly infected people go in every direction.
Your hypothetical test with tiny sensitivity is pointless, in this regard: it has a (less than) tiny chance of preventing each risky passenger. In my view, any kind of low-sensitivity testing before departure is theatre: it won't make any difference in preventing new infection from breaking out.
The government of the country that I am in agrees, and requires a negative PCR test.