Highly pathogenic influenza A viruses (infection with) (non-poultry including wild birds),
Italy
Information received on 21/11/2020 from Dr Davide Lecchini, Chief Veterinary Officer, Directorate General for Veterinary Health and Veterinary MedicinalProducts (DGSAF), Ministry of Health, ROME, Italy
Summary
Report type Immediate notification
Date of start of the event 12/11/2020
Date of confirmation of the event 20/11/2020
Report date 21/11/2020
Date submitted to OIE 21/11/2020
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 a defined zone within the 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)
Follow-up report No. 7 (22/01/2021)
New outbreaks (2)
Outbreak 1 ( HPAIWB_1_2020_VE) Campagna Lupia, Venezia, Veneto
Date of start of the outbreak 12/11/2020
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) 1 0 1 0
Outbreak 2 (HPAIWB_2_2020_RO ) Porto Tolle Valle Cą Zuliani, Rovigo, Veneto
Date of start of the outbreak 14/11/2020
Outbreak status Resolved (02/12/2020)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Mallard:Anas platyrhynchos(Anatidae) 3 0 3 0
Eurasian Wigeon:Anas penelope(Anatidae) 4 0 4 0
Affected population Highly pathogenic avian influenza virus subtype H5N8 was detected in four wigeons and three mallards.
Summary of outbreaks Total outbreaks: 2
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Common Teal:Anas crecca(Anatidae) 1 0 1 0
Mallard:Anas platyrhynchos(Anatidae) 3 0 3 0
Eurasian Wigeon:Anas penelope(Anatidae) 4 0 4 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% **
Mallard:Anas platyrhynchos(Anatidae) ** ** 0.00% **
Eurasian Wigeon:Anas penelope(Anatidae) ** ** 0.00% **
*Removed from the susceptible population through death, destruction and/or slaughter
**Not calculated because of missing information
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments HPAI H5 viruses belonging to the 2.3.4.4 B clade have just been detected in north-east Italy in four hunted wild birds, namely two wigeons (Mareca penelope) and one mallard (Anas platyrhynchos) sampled in a hunting area in Rovigo province (Cą Zuliani, Porto Tolle) and one common teal (Anas crecca) shot in a hunting area in Venice province (Valle Figheri, Campagnia Lupia). The HA sequence surrounding the cleavage site is highly related to that of HPAI currently circulating in Northern Europe. Identification of the NA subtype and characterization of the full genome is in process.
Control measures
Measures applied
  • Movement control inside the country
  • Screening
  • Control of wildlife reservoirs
  • 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 of the Venezie - Padova (National laboratory) Common Teal real-time PCR 20/11/2020 Positive
Experimental Zooprophylactic Institute of the Venezie - Padova (National laboratory) Eurasian Wigeon real-time PCR 20/11/2020 Positive
Experimental Zooprophylactic Institute of the Venezie - Padova (National laboratory) Mallard real-time PCR 20/11/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations