4 ms·
Yes, that is the meaning. Person 1's individual time line looks like this to Person 1: - Person 1 contracts the virus, becomes infectious, but shows no symptom
by bunnie 6y ago
Yes, that is the meaning. Person 1's individual time line looks like this to Person 1:
- Person 1 contracts the virus, becomes infectious, but shows no symptoms.
- Person 1 gives the virus to Person 4.
- Person 4 becomes ill and shows symptoms, thus seeking testing.
- A positive test result causes Person 4 to report the exposure. This causes their key to be flagged in the exposure database.
- Person 1 downloads the updated exposure database and then receives a notification that they were exposed due to a match to Person 4's key.
- The next step is up to Person 1. However, a perfectly reasonable scenario is Person 1 now thinks, "I feel fine, but I will be extra vigilant and in case I feel symptoms I'll go for testing right away!"
In this case, Person 1 would never register on the app as positive because as an asymptomatic carrier they would never suspect they have the virus, and thus never go for testing even though they are infectious.
- masswerk 6y agoWithout the graph, Person 1's subjective timeline is probably much like this: "Oh, that Person 4, whom I met five days ago, has become infected. However, at that time she probably wasn't infectious and I'm showing no symptoms anyway."