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From January 1 to September 30, 2026, 7,455 outbreaks of African swine fever (ASF) were reported in the countries included in the ADIS system. Of these, 733 involved domestic pigs and 6,722 involved wild boars.
In domestic pigs, outbreaks were concentrated particularly in Romania (315) and Serbia (217). Together, these two countries accounted for nearly three-quarters of the reported cases. Other notable locations included Croatia (130 outbreaks), Moldova (25), Bosnia and Herzegovina (13), Poland (10), and Ukraine (9).
Among wild boars, Poland led the notifications with 1,721 outbreaks, followed by Italy (1,096), Lithuania (859), Germany (718), Hungary (625), and Latvia (591). These six countries accounted for more than 80% of the outbreaks recorded in wild boars. Spain reported 60 outbreaks during the period.
Fewer outbreaks than in the first nine months of 2025*
Compared with the same period in 2025, there was a 16.6% decrease in the total number of outbreaks, falling from 8,937 to 7,455. This reduction was driven by the trend in wild boars: notifications dropped from 8,205 outbreaks between January and September 2025 to 6,722 during the same period in 2026—an 18.1% decrease.
In domestic pigs, by contrast, the situation remained practically stable: 732 outbreaks between January and September 2025 compared to 733 in 2026. However, the geographical distribution changed. Romania went from 364 to 315 outbreaks and Serbia from 178 to 217, while Croatia saw an increase from 43 to 130 outbreaks.
ASF outbreaks in domestic pigs by country: January–September 2025 and 2026. Source: 333, based on ADIS data.
Significant changes have also been observed among wild boars. Poland went from 2,720 outbreaks in January–September 2025 to 1,721 in 2026, and Germany from 1,840 to 718. Conversely, Italy went from 539 to 1,096 outbreaks, and Lithuania from 556 to 859.
ASF outbreaks in wild boar by country: January–September 2025 and 2026. Source: 333, based on ADIS data.
*The 2025 data have been reconstructed from AGES tables based on ADIS notifications for January–March, April–June, and July–September, whereas the 2026 data correspond to the ADIS report for the period from January 1 to September 30.
Find more information regarding ASF in our ASF Special section.
October 7, 2026/ 333 Staff with data from ADIS.
