OIE: Low pathogenic avian influenza (poultry) ,Hong Kong (SAR - PRC)

Information received on 02/01/2015 from Dr Thomas Sit, Chief Veterinary Officer / Assistant Director (Inspection & Quarantine), Agriculture, Fisheries and Conservation Department, Hong Kong Special Administrative Region Government, Hong Kong , Hong Kong (SAR - PRC)

Summary

Report type
Immediate notification
Date of start of the event
30/12/2014
Date of pre-confirmation of the event
30/12/2014
Report date
02/01/2015
Date submitted to OIE
02/01/2015
Reason for notification
Reoccurrence of a listed disease
Date of previous occurrence
28/04/2014
Manifestation of disease
Sub-clinical infection
Causal agent
Low pathogenic avian influenza virus
Serotype
H7N9
Nature of diagnosis
Laboratory (advanced)
This event pertains to
the whole country

New outbreaks

Summary of outbreaks
Total outbreaks: 1
Outbreak Location
  • HONG KONG ( 4 Hing Wah Street, Cheung Sha Wan )
Total animals affected
Species
Susceptible
Cases
Deaths
Destroyed
Slaughtered
Birds
18962
1
0
18962
0
Outbreak statistics
Species
Apparent morbidity rate
Apparent mortality rate
Apparent case fatality rate
Proportion susceptible animals lost*
Birds
0.01%
0.00%
0.00%
100.00%

* Removed from the susceptible population through death, destruction and/or slaughter;

Epidemiology

Source of the outbreak(s) or origin of infection
  • Legal movement of animals
Epidemiological comments
An intensive surveillance system is in place for all imported poultry, wild bird, local poultry farms, poultry markets and pet bird shops.

An imported consignment containing 1200 chickens was tested positive for low pathogenic avian influenza virus (H7N9) during the routine surveillance programme.

A total of 18,962 poultry, including 11,800 chickens, 3,140 silky chickens, 1,025 chukars and 2,997 pigeons were culled on 31 December 2014. Importation of live poultry is banned for 21 days.

Control measures

Measures applied
  • Stamping out
  • Quarantine
  • Movement control inside the country
  • Screening
  • Zoning
  • Disinfection of infected premises/establishment(s)
  • No vaccination
  • No treatment of affected animals
Measures to be applied
  • No other measures

Diagnostic test results

Laboratory name and type
Tai Lung Veterinary Laboratory, Agriculture, Fisheries and Conservation Department ( National laboratory )
Tests and results
Species
Test
Test date
Result
Birds
haemagglutination inhibition test (HIT)
30/12/2014
Positive
Birds
polymerase chain reaction (PCR)
30/12/2014
Positive
Birds
virus isolation
Pending
Laboratory name and type
Centre of Influenza Research, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong ( Regional Reference Laboratory )
Tests and results
Species
Test
Test date
Result
Birds
gene sequencing
Pending

Future Reporting

The event is continuing. Weekly follow-up reports will be submitted.