Reported infectious-disease cases in Greece increased by 5.7 percent in 2025, based on preliminary figures cited by the report. The total rose to 6,851 from 6,484 in 2024. Influenza moved upward across the chart, while coronavirus cases dropped 78 percent. Attica was marked red, the most severe category in the alert system used for the data. Cases began their seasonal climb in December, and January was the most heavily affected month of the year. The national count covers cases formally declared to health authorities, not every infection in the population. The report points to further preliminary breakdowns by disease and reporting period.