Information received on 08/01/2021 from Dr Darius Remeika, Director of the State Food and Veterinary, State Food and Veterinary Service, Ministry of Agriculture, VILNIUS, Lithuania
Summary
Report type
Immediate notification
Date of start of the event
08/01/2021
Date of confirmation of the event
08/01/2021
Report date
08/01/2021
Date submitted to OIE
08/01/2021
Reason for notification
Recurrence of a listed disease
Date of previous occurrence
07/04/2017
Manifestation of disease
Clinical disease
Causal agent
Highly pathogenic influenza A virus
Serotype
H5N8
Nature of diagnosis
Laboratory (advanced)
This event pertains to
a defined zone within the country
New outbreaks (3)

Outbreak 1
Klaipeda, Klaipeda
Date of start of the outbreak
08/01/2021
Outbreak status
Resolved (08/01/2021)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

2
2


Affected population
Information about dead wild birds (mute swan, Cygnus olor) received in the framework of enhanced passive surveillance.
Outbreak 2
Klaipeda, Klaipeda
Date of start of the outbreak
08/01/2021
Outbreak status
Resolved (08/01/2021)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

1
1


Affected population
Information about dead wild birds (mute swan, Cygnus olor) received in the framework of enhanced passive surveillance.
Outbreak 3
Raseiniai, Kaunas
Date of start of the outbreak
08/01/2021
Outbreak status
Resolved (08/01/2021)
Epidemiological unit
Other
Affected animals
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

1
1


Affected population
Information about dead wild birds (mute swan, Cygnus olor) received in the framework of enhanced passive surveillance. A wild bird was collected and delivered to the National Reference Laboratory – National Food and Veterinary Risk Assessment Institute. The sequence of the HA gene in the virus was found similar to that of the highly pathogenic H5N8 virus, with the same highly pathogenic cleavage site (PLREKRRKR/GLF).
Summary of outbreaks
Total outbreaks: 3
Total animals affected
Species
Susceptible
Cases
Deaths
Killed and disposed of
Slaughtered
Mute Swan:Cygnus olor(Anatidae)

4
4


Outbreak statistics
Species
Apparent morbidity rate
Apparent mortality rate
Apparent case fatality rate
Proportion susceptible animals lost*
Mute Swan:Cygnus olor(Anatidae)
**
**
100.00%
**
*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

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
National Food and Veterinary Risk Assessment Institute (Regional Reference Laboratory)
Mute Swan
real-time reverse transcriptase/polymerase chain reaction (RRT-PCR)
08/01/2021
Positive
National Food and Veterinary Risk Assessment Institute (Regional Reference Laboratory)
Mute Swan
real-time reverse transcriptase/polymerase chain reaction (RRT-PCR)
08/01/2021
Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.