Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds),
Information received on 23/12/2020 from Dr Davide Lecchini, Chief Veterinary Officer, Directorate General for Veterinary Health and Veterinary MedicinalProducts (DGSAF), Ministry of Health, ROME, Italy
Report type Follow-up report No. 4
Date of start of the event 12/11/2020
Date of confirmation of the event 20/11/2020
Report date 23/12/2020
Date submitted to OIE 23/12/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 26/01/2018
Manifestation of disease Clinical disease
Causal agent Highly pathogenic influenza A virus
Serotype H5N8
Nature of diagnosis Clinical, Laboratory (basic), Necropsy
This event pertains to the whole country
Related reports Immediate notification (21/11/2020)
Follow-up report No. 1 (27/11/2020)
Follow-up report No. 2 (04/12/2020)
Follow-up report No. 3 (16/12/2020)
Follow-up report No. 4 (23/12/2020)
Follow-up report No. 5 (30/12/2020)
Follow-up report No. 6 (13/01/2021)
New outbreaks (1)
Outbreak 1 (HPAIWB_10_2020_RO) Porto Viro Valle cą pasta, Rovigo, Veneto
Date of start of the outbreak 12/12/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Common Teal:Anas crecca(Anatidae) 3 0 3 0
Affected population Highly pathogenic avian influenza H5N8 viruses have been detected in three wigeons (Mareca penelope), shot in a hunting area.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Common Teal:Anas crecca(Anatidae) 3 0 3 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Common Teal:Anas crecca(Anatidae) ** ** 0.00% **
*Removed from the susceptible population through death, destruction and/or slaughter
**Not calculated because of missing information
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Control measures
Measures applied
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
Experimental Zooprophylactic Institute (IZS), Venezie - Padova (National laboratory) Common Teal polymerase chain reaction (PCR) 18/12/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations