A disease map can look more precise than its evidence. A dot has exact pixels even when the source names only a province. A bright color can feel urgent even when the event is historical. Reading responsibly means checking the fields behind the symbol.
Start with the layer
Human events, animal detections and natural foci are different record types. A natural focus shows an ecological context in which Yersinia pestis can persist. It is not a current human case. Plague Map keeps those layers separate.
Check status in two dimensions
Event phase describes whether a record is active, monitored, contained or historical. Case confirmation describes whether evidence is confirmed, probable, suspected, ruled out or unknown. A monitored event can remain unconfirmed; an old event can be historically confirmed.
Read the date and location precision
The data-through date tells you how recent the underlying information is. The editorial-review date tells you when the record was last checked. Neither automatically means the source itself published that day.
Coordinates are approximate. A point may stand for a city, province or health zone and includes a location-precision estimate. It does not show a patient address, travel path or risk radius.
Follow the source
The map is an index into evidence. Open the event file, compare the claims with their sources, and check what remains unknown. If a headline and an authority disagree, the disagreement belongs in the record rather than being silently resolved by the mapmaker.