Cwa-wishlist: After negative antigen rapid test: Show status: "Cannot spread virus" for some hours

[Wallgauer]

Feature description

In addition to the PCR tests there are antigen rapid tests available. They cannot for sure say that you are not infected, but are quite effective to tell you that you cannot spread the virus for the next hours.

It would be great to reflect this in the corona-warn-app. So that the status shows: "Tested, cannot spread the virus for ... hours"

So it could be made very easy to e.g. visit a residential home for the elderly.
You can do the rapid test somewhere. 15 min later (when the test result is there) you get the status message on your phone and can show this at the entrance of e.g. the residential home.
There should be a countdown from the test-time to the moment when you cannot say for sure anymore that you cannot spread the virus. So if this time is e.g. 7 hours, then a 7 hours countdown from the testing.

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Internal Tracking ID: EXPOSUREAPP-3672

[Ein-Tim]

@Wallgauer
Please see #239 and consider closing this Issue, so we can focus the discussion on one thread.
Thanks!

[jucktnich]

I don't think it's a duplicate, because in the other issue it's about changing from red to green, when there's a negative test result and in this issue about showing others, that you can't spread the virus in the next few hours.

[Ein-Tim]

Okay I understand.
So you mean to stop sending Bluetooth Beacons but still reciving them.

Or what do you mean with:

showing others, that you can't spread the virus in the next few hours.

[Wallgauer]

Hi, yes, this is totally different topic.

The quick tests (antigen-tests) are different to the traditional tests. They don't show if you have or have not the virus. But they say that you don't have enough virus in your nose/mouth so that you won't infect someone else in the next few hours.

The test result is very fast (takes about 15 min from test to result) and cheaper. But for sure after a day or so it can be that you develop the illness so that you can e.g. spread the virus on the day after the next.

[Ein-Tim]

@Wallgauer
I understand, but what should the App do with this Information?
Stop sending Bluetooth Beacons to others because you can't spread the virus?

[Wallgauer]

No, for sure the app should work as normal.
But it should show it on the start screen with a counter.
So that you just can show your mobile at the entrance to e.g. the residence of elderly people and get access.
So you have your "proof point" ready at hand.

[Wallgauer]

And for sure, if you are positive tested, then for sure you have Corona and this can count like a normal PCR test.

[MikeMcC399]

@Wallgauer

So that you just can show your mobile at the entrance to e.g. the residence of elderly people and get access.

I think you will meet resistance for this suggestion, because it goes against the principle that the use of the app is completely voluntary. Any use where it would be mandatory (to gain admission to somewhere) becomes difficult.

[Wallgauer]

I don't think so. It is only additional and making it easier. E.g. you might get a "test confirmation letter" or something like this at the testing station. Or you even can again do an new quick-test at the entrance of the residence you want to enter.
Most important is the "reuse" of one test if you first enter e.g. first a hospital (do the antigen test there) and then a residence. Instead of being tested within the "OK" period twice you can just show your proof point. And additionally you have some sort of self-control with the counter until when you are for sure "safe for others".

[heinezen]

Hello everyone,

Thank you for the suggestion and the oongoing discussion. I have created a Jira ticket for this request (ticket ID: EXPOSUREAPP-3672), so that it will now be discussed internally by the developers and the RKI. They will decide if and how the feature is implemented. We will inform you here on Github if we get any news regarding the issue that we can communicate.

Regards,
CH

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Corona-Warn-App Open Source Team

[carstenmueller]

+1 Having the test result in the app also for an antigen-test would be nice, also to avoid that you have to do tests twice. By this is would be possible to show the negative test also to others to proof your current status. This could be useful for different things. It can also show you when you should do the next antigen- or PCR-test. And it can also be used for the calculation of the current risk status.

Also having the positive antigen-result in the app could also help in the same way as a positive PCR-test result works.

[kevin-kraus]

In itself a good idea, but here I see the problem of verification / authenticity of the test result. Who gives the assurance that I have entered my test result correctly and not, just to gain access, stated to be negative? Here, a confidential verification is clearly missing compared to PCR tests, which are verified and transmitted by a trustworthy laboratory.

[Wallgauer]

You are right, it would not work if you buy such a test-kit and do the test at home. But if you do the test in a hospital or some residence for elderly etc. there are trustworthy persons that could verify the test result similar to the way it is done for laboratories today.

[carstenmueller]

As far as I got it there is currentl yonly the permission to do the antigen test by authorized medical persons, there is no permission to do the test by yourself at home yet. If medical personal can enter the test result, like now the laboratory does, it is nearly the same process.

[kevin-kraus]

Okay, if the test and the transmission of the result is done by authorized medical personnel it would be possible. But giving the end-user the ability to enter unverified test results must not be in consideration. That's the whole point what I wanted to say.

[ndegendogo]

If medical personal can enter the test result, like now the laboratory does, it is nearly the same process.

Except that it is not sufficient to authorize a trustworthy person. The labs transmit their test results via software to cwa server, and this infrastructure is still in ramp-up. Many, but still not all labs are currently connected. So also this testing facilities will need this infrastructure ramp-up.
I don't say this is impossible or a bad idea; I just want to point out that this feature will need more than just an extension of the app.