Providing status of user devices associated with a biohazard

A computing device comprises:

• an interface;
• a memory;
• and
• a processing module operably coupled to the interface and the memory, wherein the processing module performs functions to:
• identify a first user device potentially associated with a biohazard;
• identify a geographic area associated with the biohazard based on previous location information of the first user device;
• estimate a time period of the biohazard based on one or more of:
• timing associated with interpreting a safety status text string generated by the first user device,
• timing associated with receiving a signal from a sensor device of the first user device, and
• timing associated with interpreting a second safety notification with regards to a second user device, wherein the second safety notification includes one or more of:
• a safety status level associated with the second user device, another geographic area associated with another biohazard, and previous location information of the first user device, wherein the second user device is potentially associated with the other biohazard;
• obtain previous location information of a third user device by least one of:
• receiving the previous location information of the third user device from the third user device,
• estimating the previous location information of the third user device based on current location information of the third user device, and
• accessing an information server to recover the previous location information of the third user device;
• identify the third user device as potentially associated with the biohazard based on the geographic area associated with the biohazard and the previous location information of the third user device when at least some of location coordinates history of the third user device for the time period of the biohazard is within the geographic area associated with the biohazard, wherein the previous location information of the third user device includes the location coordinates history of the third user device;
• and
• issue, via the interface, a safety notification to the third user device, wherein the safety notification includes one or more of the geographic area associated with the biohazard, a safety status request, a safety status level of the first user device, a subset of the previous location information of the first user device, and a subset of the previous location information of the third user device.