Do Covid Exposure Notifications Cross State Lines?

Post date: 2022-08-06 02:18:03

If I have my state's version of the Covid notification app that's based on Apple and Google's Covid tracking technology, would I get notified if I was exposed to someone from another state?

Yesterday I woke up to a notification from MassNotify (the Massachusetts Covid exposure notification app) that I had been exposed to someone who later tested positive over the weekend. (So far, no symptoms and rapid tests are negative, so fingers crossed but I think I'm still Covid-free).

The odd thing is that I wasn't in Massachusetts over the weekend, I was attending a wedding in Seattle. So does the app (which relies on underlying technology from Apple) connect the databases of the different state departments of health, meaning I would get notified if I was exposed to a Seattleite while in Seattle? Or does this mean that the person I was exposed to was also a Masshole? (Certainly plausible, since the bride's family is from here).

(Also, just to note, I'm a software engineer. I don't need the cool underlying technology behind these notification apps explained to me. I'm just curious if anyone knows whether the data they collect is state-specific or not.)

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