Information processing system, information processing method, and recording media

An information processing method that is performed by a first server, a plurality of second servers that are associated with respective predetermined places and a user terminal, wherein:

• the first server is configured to:
• acquire movement history information on an infected person who is proven to be infected with a predetermined infectious disease;
• identify, based on the movement history information, a first place that the infected person visited and a first visit date and time;
• and
• notify a second server associated with the first place of information about the first place and information about the first visit date and time;
• and
• the plurality of second servers are each configured to:
• based on visit history information including a visit date and time of the predetermined place by a user who is associated with the predetermined place, identify a first user who visited the predetermined place, as the first place, on the first visit date/time of the infected person notified from the first server;
• and
• notify the first user of possibility of being infected with the predetermined infectious disease;
• the first server is further configured to:
• receive an infection report from a user terminal of the infected person, together with the movement history information;
• assign identification information to the infection report;
• notify the user terminal of the infected person of the identification information;
• and
• notify the second server associated with the first place of the identification information, together with the information about the first place and the information about the first visit date and time;
• the second server is further configured to:
• transmit, to a user terminal of the first user, the identification information together with a notification about the possibility of being infected with the predetermined infectious disease;
• and
• the user terminal of the first user and the user terminal of the infected person are each further configured to:
• transmit the infection report to the first server;
• receive, from the first server, first identification information assigned to the infection report;
• receive, from one of the plurality of second servers, the identification information together with the notification about the possibility of being infected with the predetermined infectious disease;
• compare the identification information received from the one of the plurality of second servers with the first identification information received from the first server;
• discard the notification received from the one of the plurality of second servers in a case where the identification information received from the one of the plurality of second servers is identical to the first identification information received from the first server;
• and
• output the notification in a case where the identification information received from the one of the plurality of second servers is not identical to the first identification information received from the first server.

One or more non-transitory computer-readable recording media stored with one or more programs which, when executed by a first server, a plurality of second servers that are associated with respective predetermined places and a user terminal:

• cause the first server to:
• acquire movement history information on an infected person who is proven to be infected with a predetermined infectious disease;
• identify, based on the movement history information, a first place that the infected person visited and a first visit date and time;
• and
• notify a second server associated with the first place of information about the first place and information about the first visit date and time;
• cause each of the plurality of the second servers to:
• based on visit history information including a visit date and time of the predetermined place by a user who is associated with the predetermined place, identify a first user who visited the predetermined place, as the first place, on the first visit date and time of the infected person notified from the first server;
• and
• notify the first user of possibility of being infected with the predetermined infectious disease;
• further cause the first server to:
• receive an infection report from a user terminal of the infected person, together with the movement history information;
• assign identification information to the infection report;
• notify the user terminal of the infected person of the identification information;
• and
• notify the second server associated with the first place of the identification information, together with the information about the first place and the information about the first visit date and time;
• further cause the second server to:
• transmit, to a user terminal of the first user, the identification information together with a notification about the possibility of being infected with the predetermined infectious disease;
• and
• cause the user terminal of the first user and the user terminal of the infected person to:
• transmit the infection report to the first server;
• receive, from the first server, first identification information assigned to the infection report;
• receive, from one of the plurality of second servers, the identification information together with the notification about the possibility of being infected with the predetermined infectious disease;
• compare the identification information received from the one of the plurality of second servers with the first identification information received from the first server;
• discard the notification received from the one of the plurality of second servers in a case where the identification information received from the one of the plurality of second servers is identical to the first identification information received from the first server;
• and
• output the notification in a case where the identification information received from the one of the plurality of second servers is not identical to the first identification information received from the first server.