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Contact tracing app
Let’s make an example:
Let’s make an example:
Sara and Alex are colleagues and they often work together from the same office. They are healthy with no symptoms, their risk index is low as 10%.
Sara and Alex are colleagues and they often work together from the same office. They are healthy with no symptoms, their risk index is low as 10%.
During the weekend Sara took a train to go to visit her mother, which was at home with a light flu. Sara spent a lot of time with her but unfortunately her mother wasn’t having a regular flu: she was infected by the COVID-19. And Sara got infected too but she doesn’t know it.
During the weekend Sara took a train to go to visit her mother, which was at home with a light flu. Sara spent a lot of time with her but unfortunately her mother wasn’t having a regular flu: she was infected by the COVID-19. And Sara got infected too but she doesn’t know it.
On the day after she took the train back to the city. At the train station Sara met Betty, an old friend of her, and they talked very briefly as Betty was on rush that day.
On the day after she took the train back to the city. At the train station Sara met Betty, an old friend of her, and they talked very briefly as Betty was on rush that day.
After a few days, Sara was working when she started to feeling unwell. Alex offered to take her to the hospital for a check. Medics found out she had the virus.
After a few days, Sara was working when she started to feeling unwell. Alex offered to take her to the hospital for a check. Medics found out she had the virus.
Sara realized she could have gotten it from her mother who got recently sick too. Medics reported the positiveness into the system. Immediately the Sara’s index value went up to 100% (assuming the test is very accurate).
Sara realized she could have gotten it from her mother who got recently sick too. Medics reported the positiveness into the system. Immediately the Sara’s index value went up to 100% (assuming the test is very accurate).
The system also updated the risk index of Alex and Betty: Alex became high-risk 70%, as he spent a lot of time with Sara in close contact, while Betty, who met Sara just for a little while, had her index increased from 10% to 25%. Her health-badge turned from green to yellow.
All the other people that Sara got close to in the last few days (even if she doesn’t know them) will have their index updated by the algorithm.
What happens to Alex?
His health-badge became orange. He required medical attention to confirm the contagion. The national health system knew already and the intervention was prioritized. In the meantime, the app told Alex to stay under voluntary quarantine, and it gave him recommendation to avoid to spread further. A simple survey assessed how he was feeling. Those data are loop-back into the system for a better prioritization and statistics.
The system also updated the risk index of Alex and Betty: Alex became high-risk 70%, as he spent a lot of time with Sara in close contact, while Betty, who met Sara just for a little while, had her index increased from 10% to 25%. Her health-badge turned from green to yellow.
All the other people that Sara got close to in the last few days (even if she doesn’t know them) will have their index updated by the algorithm.
What happens to Alex?
His health-badge became orange. He required medical attention to confirm the contagion. The national health system knew already and the intervention was prioritized. In the meantime, the app told Alex to stay under voluntary quarantine, and it gave him recommendation to avoid to spread further. A simple survey assessed how he was feeling. Those data are loop-back into the system for a better prioritization and statistics.
Eventually Alex got tested, highlighting a positivity. The medic could inform the system about that. During that process the app was exchanging anonymous data with the medic's device. Straight after the Alex's health-badge turned to red.
Eventually Alex got tested, highlighting a positivity. The medic could inform the system about that. During that process the app was exchanging anonymous data with the medic's device. Straight after the Alex's health-badge turned to red.
Alex's health-badge can return to be green upon authority's test. This test will most likely be happening after a quarantine period.
Alex's health-badge can return to be green upon authority's test. This test will most likely be happening after a quarantine period.
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