A computing system comprising: an electronic personal assistant application server including a processor configured to: determine a target location for a selected registered user at a predetermined future time based on one or more of positioning data of a client computing device of the selected registered user and/or future event data for the selected registered user stored in a user personal assistant database ; determine a group of other registered users who will be physically present at the target location at the predetermined future time or within a time range prior to the predetermined future time based on one or more of positioning data of a client computing device of the selected registered user and/or future event data for the selected registered user stored in a user personal assistant database ; determine group health data representing a health condition of the group of other registered users correlated with the health condition, the group health data being determined based on anonymous medical records statistics for the group of other registered users stored in an aggregated medical records statistics database in communication with the electronic personal assistant application server , the anonymous medical records statistics including biometric data sensed by at least one biometric sensor associated with at least one user computing device of one of the other registered users; identify a value of a health risk level for the target location using the group health data of the group of other registered users ; generate an activity warning for the target location based on the value of the health risk level compared to a predetermined threshold value; and send the activity warning to a client computing device of the selected registered user , the activity warning configured for presentation on the client computing device with an indication of the target location and/or a future event associated with the target location . determine a target location for a selected registered user at a predetermined future time based on one or more of positioning data of a client computing device of the selected registered user and/or future event data for the selected registered user stored in a user personal assistant database ; determine a group of other registered users who will be physically present at the target location at the predetermined future time or within a time range prior to the predetermined future time based on one or more of positioning data of a client computing device of the selected registered user and/or future event data for the selected registered user stored in a user personal assistant database ; determine group health data representing a health condition of the group of other registered users correlated with the health condition, the group health data being determined based on anonymous medical records statistics for the group of other registered users stored in an aggregated medical records statistics database in communication with the electronic personal assistant application server , the anonymous medical records statistics including biometric data sensed by at least one biometric sensor associated with at least one user computing device of one of the other registered users; identify a value of a health risk level for the target location using the group health data of the group of other registered users ; generate an activity warning for the target location based on the value of the health risk level compared to a predetermined threshold value; and send the activity warning to a client computing device of the selected registered user , the activity warning configured for presentation on the client computing device with an indication of the target location and/or a future event associated with the target location . <EOS>