ASF Germany: Wild boar infections peak in NRW state in March

26-03 | |
A fenced off area to prevent the migration of wild boar in Hesse state, Germany. Photo: Twan Wiermans
A fenced off area to prevent the migration of wild boar in Hesse state, Germany. Photo: Twan Wiermans

March has so far been one of the most intensive months when it comes down to African Swine Fever findings in the German state North-Rhine Westphalia. So far, 73 infected carcasses have been found, according to figures released by the German TSIS database.

Cases went up in all infected districts, i.e. Olpe (28 dead wild boar in March alone), Siegen-Wittgenstein (41) as well as Hochsauerlandkreis (4). Especially the outbreaks in the latter district ought to be worrisome as the virus first broke out in February, meaning that the virus is still spreading geographically. It remains to be seen whether or not it will make more victims.

Only the month of August 2025 was more intensive in North Rhine Westphalia (NRW) state with 74 cases. The number of 73 cases means a strong growth when compared to January (23) and February 2026 (32 cases). In NRW state, so far no pig farms got infected.

The location of the outbreaks in NRW state can be seen below in the interactive map.

NRW the only state with ASF pressure

It looks like that currently NRW state is the only one in Germany giving the authorities a severe headache. In other states in Germany, the infection pressure of ASF appears to have come down. In Hesse, the situation appears calm. Since August 2025, the number of found infected wild boar hasn’t exceeded 20, with March only yielding 3 infected carcasses. Also other states in the south, like Rhineland-Palatinate as well as Baden-Württemberg, may even be declared free of ASF later this year, as they had their last outbreaks mid-2025.

The same goes for Brandenburg state, in the east, bordering Poland. It was here where the first cases of ASF were found in Germany. The last infected wild boar there was found on May 14, 2025. A state is considered free from ASF one year after the last outbreak emerged. found.

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ter Beek
Vincent ter Beek Editor of Pig Progress / Topic: Pigs around the world