17 March 2026
European veterinary authorities are mobilizing to contain a significant wave of Newcastle Disease Virus (NDV) outbreaks, with the current epicenter identified in Poland. Since the beginning of the year, Polish officials have confirmed 28 distinct outbreak sites. The scale of recent events is particularly severe; following the detection of the virus at two major commercial broiler farms, authorities were compelled to cull over 500,000 birds.
A critical concern emerging from diagnostic reports is the manifestation of the disease in flocks that had reportedly undergone full vaccination protocols. Serological testing conducted on broiler farms in Poland revealed antibody titers significantly below the threshold required for clinical protection.
The primary cause of this vulnerability is suboptimal vaccine administration rather than primary vaccine failure. This execution gap has left large avian populations immunologically naive despite official vaccination records.
Germany: As of mid-March, the situation remains relatively stable. Ten outbreaks have been documented, involving one turkey flock and nine laying hen operations.
Spain: A new outbreak of Newcastle Disease (ND) was confirmed on March 9, 2026, at a laying hen farm in Terrateig, located in the Vall d'Albaida region of Valencia. The infection affected one building housing approximately 27,000 birds, all 23 weeks old. This incident marks the sixth outbreak in Spain this season. Notably, it occurred within the same surveillance area where previous restrictions were only recently lifted in February 2026.
UK: The escalating viral pressure in Continental Europe has prompted the Department for Environment, Food & Rural Affairs (DEFRA) and the National Farmers' Union (NFU) to issue an urgent risk assessment. The update analyzes the probability of viral introduction to Britain and mandates a strengthening of biosecurity protocols across all commercial and backyard holdings.
Molecular characterization of the isolates has identified the circulating strain as Genotype VII.1.1.
