총 469페이지
465페이지 본문시작
참고자료
For the introduction of HPAI H5N1 to the country, possible roles of migratory birds,
importation of feed ingredients, hand carried poultry products and people who have visited
countries with HPAI outbreaks were investigated. Initial conclusion of the Epidemiological
Investigation Committee isthat the migratory birds were the most likely source based on the
following evidence:
a. Proximity of migratory bird habitats with Infected Premises (IPs).
b. Migration of known susceptible species from countries with HPAI outbreaks.
c. Genetic similarity of the Korean virus isolates with virus isolated from wild swans in
Japan
d. Detection of H5 antibodies in wild (migratory) ducks.
For the spread of disease among farms, movement of poultry, people, vehicles, live-bird
markets and local spread was involved.
Final report of the epidemiological investigations is under progress.
Surveillance
HPAI surveillance conducted in Korea includes passive surveillance of investigating notified
cases, and active surveillance of testing high risk groups and areas. HPAI is a notifiable
disease in Korea and all suspect cases must be reported to the veterinary authorities. Also,
cases reported for other poultry diseases that require differential diagnosis are tested for
HPAI. Active surveillance includes annual testing of breeder duck farms, broiler duck farms
and wild bird surveillance, which is concentrated during the autumn and winter. Surveillance
activities conducted prior to the outbreaks have shown no evidence of HPAI infection in
Korea.
After the confirmation of the first outbreak in April 2008, surveillance activities were
strengthened and as a result, sixty five additional HPAI infected farms were identified in
addition to the 33 HPAI outbreak farms, bringing the total to 98 infected farms. The 65
additionally identified farms were located in already established control zones and had either
been stamped out or were waiting to be stamped out at time of testing.
From 1 April 2008 to 30 June, a total of 56 cases were notified on suspicion of HPAI, of
which 34 were confirmed HPAI positive. Differential diagnosis included Low Pathogenic
- 461 -
For the introduction of HPAI H5N1 to the country, possible roles of migratory birds,
importation of feed ingredients, hand carried poultry products and people who have visited
countries with HPAI outbreaks were investigated. Initial conclusion of the Epidemiological
Investigation Committee isthat the migratory birds were the most likely source based on the
following evidence:
a. Proximity of migratory bird habitats with Infected Premises (IPs).
b. Migration of known susceptible species from countries with HPAI outbreaks.
c. Genetic similarity of the Korean virus isolates with virus isolated from wild swans in
Japan
d. Detection of H5 antibodies in wild (migratory) ducks.
For the spread of disease among farms, movement of poultry, people, vehicles, live-bird
markets and local spread was involved.
Final report of the epidemiological investigations is under progress.
Surveillance
HPAI surveillance conducted in Korea includes passive surveillance of investigating notified
cases, and active surveillance of testing high risk groups and areas. HPAI is a notifiable
disease in Korea and all suspect cases must be reported to the veterinary authorities. Also,
cases reported for other poultry diseases that require differential diagnosis are tested for
HPAI. Active surveillance includes annual testing of breeder duck farms, broiler duck farms
and wild bird surveillance, which is concentrated during the autumn and winter. Surveillance
activities conducted prior to the outbreaks have shown no evidence of HPAI infection in
Korea.
After the confirmation of the first outbreak in April 2008, surveillance activities were
strengthened and as a result, sixty five additional HPAI infected farms were identified in
addition to the 33 HPAI outbreak farms, bringing the total to 98 infected farms. The 65
additionally identified farms were located in already established control zones and had either
been stamped out or were waiting to be stamped out at time of testing.
From 1 April 2008 to 30 June, a total of 56 cases were notified on suspicion of HPAI, of
which 34 were confirmed HPAI positive. Differential diagnosis included Low Pathogenic
- 461 -
465페이지 본문끝
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