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Hong Kong - Outbreaks of African swine fever in pigs 2022-2023

Pathfinder

Pathfinder

Editor, Senior Moderator
Immediate notification
African swine fever virus (Inf. with) , Hong Kong
...
General Information

COUNTRY OR ZONE
COUNTRY

DISEASE
African swine fever virus (Inf. with)

STARTED ON
11-01-2022

ANIMAL TYPE
TERRESTRIAL

CONFIRMED ON
13-01-2022

REASON
Recurrence of an eradicated disease

CAUSAL AGENT
African swine fever virus

ENDED ON
-

DISEASE CATEGORY
OIE-listed

REPORTED ON
15-01-2022

LAST OCCURRENCE
01-09-2021

Epidemiology

SOURCE OF EVENT OR ORIGIN OF INFECTION
- Unknown or inconclusive


EPIDEMIOLOGICAL COMMENTS
The Hong Kong government has established a surveillance system for ASF. There have been recent reports of abnormal deaths in wild boars in Wong Yue Tan area of New Territories. On 12/01/2022, six dead wild boars were found in the area and samples were collected from a wild pig carcass which was in a relatively intact state for testing. Results were positive for ASF virus. No other abnormal deaths have been observed in other areas so far. The Agriculture Fisheries and Conservation Department will continue to monitor any deaths that warrant attention, and maintain surveillance in both the local and wild pig population. The government has been closely monitoring the health of animals on all local pig farms and samples will be collected for testing if necessary. Currently, no pig farms are found affected by this case. There are no pig farms located within three kilometres of the affected location.
...

Outbreaks

ob_95369 - Wong Yue Tan

OUTBREAK REFERENCE
22-00522

STARTED ON
12-01-2022

EPIDEMIOLOGICAL UNIT
Village

NUMBER OF OUTBREAKS
-

ENDED ON
12-01-2022

AFFECTED POPULATION DESCRIPTION
ASFV was detected from samples taken from a wild pig carcass under the government's ASF surveillance programme.

APPROXIMATE LOCATION
Wong Yue Tan

FIRST ADMINISTRATIVE DIVISION
Tai Po

SECOND ADMINISTRATIVE DIVISION
-

THIRD ADMINISTRATIVE DIVISION
-

GEOGRAPHIC COORDINATES
Lat : 22.463673

Long : 114.202552


SPECIES MEASURING UNIT SUSCEPTIBLE CASES DEATHS KILLED AND DISPOSED OF SLAUGHTERED/KILLED FOR COMMERCIAL USE VACCINATED
Wild boar (Sus scrofa):Suidae-Artiodactyla NEW Animal - 1 1 0 0 0
TOTAL Animal - 1 1 0 0 0
- NEW Animal - 1 1 0 0 0
TOTAL Animal - 1 1 0 0 0
...
https://wahis.oie.int/#/report-info?reportId=46676
 
Immediate notification
African swine fever virus (Inf. with) , Hong Kong
...
General Information

COUNTRY OR ZONE
COUNTRY

DISEASE
African swine fever virus (Inf. with)

STARTED ON
27-05-2022

ANIMAL TYPE
TERRESTRIAL

CONFIRMED ON
30-05-2022

REASON
Recurrence of an eradicated disease

CAUSAL AGENT
African swine fever virus

ENDED ON
-

DISEASE CATEGORY
OIE-listed

REPORTED ON
01-06-2022

LAST OCCURRENCE
24-02-2022

Epidemiology

SOURCE OF EVENT OR ORIGIN OF INFECTION
- Unknown or inconclusive


EPIDEMIOLOGICAL COMMENTS
The Hong Kong government has established a surveillance system for ASF. A debilitated wild pig was found in the area near Tai Lam Wu, Sai Kung, while following up on a wild pig sighting report from a member of the public recently. The wild pig subsequently died and samples were collected from the carcass for testing. Results were positive for ASF virus. The Agriculture Fisheries and Conservation Department will continue to monitor any wild pig deaths that warrant attention, and maintain surveillance in the wild pig population. There is one pig farm located within three kilometers of the affected location, the Department will arrange veterinary inspection to this farm and follow up if necessary. At the moment, no pig farms are found affected by this case. The Department has been closely monitoring the health condition of pigs on all local pig farms and samples will be collected for testing if necessary.
...

Outbreaks

ob_103608 - Tai Lam Wu, Sai Kung

OUTBREAK REFERENCE
22-13869

STARTED ON
27-05-2022

EPIDEMIOLOGICAL UNIT
Village

NUMBER OF OUTBREAKS
-

ENDED ON
27-05-2022

AFFECTED POPULATION DESCRIPTION
ASFV was detected in samples taken from a wild pig carcass under the government's ASF surveillance programme.

APPROXIMATE LOCATION
Tai Lam Wu, Sai Kung

FIRST ADMINISTRATIVE DIVISION
Sai Kung

SECOND ADMINISTRATIVE DIVISION
-

THIRD ADMINISTRATIVE DIVISION
-

GEOGRAPHIC COORDINATES
Lat : 22.349786

Long : 114.234592


SPECIES MEASURING UNIT SUSCEPTIBLE CASES DEATHS KILLED AND DISPOSED OF SLAUGHTERED/KILLED FOR COMMERCIAL USE VACCINATED
Wild boar (Sus scrofa):Suidae-Artiodactyla NEW Animal - 1 1 0 0 0
TOTAL Animal - 1 1 0 0 0
- NEW Animal - 1 1 0 0 0
TOTAL Animal - 1 1 0 0 0

...

https://wahis.woah.org/#/report-info?reportId=54837
 
Hong Kong - African swine fever virus (Inf. with) - Immediate notification

GENERAL INFORMATION
COUNTRY/TERRITORY OR ZONE
COUNTRY/TERRITORY

ANIMAL TYPE
TERRESTRIAL

DISEASE CATEGORY
OIE-listed

EVENT ID
4898

DISEASE
African swine fever virus (Inf. with)

CAUSAL AGENT
African swine fever virus

GENOTYPE / SEROTYPE / SUBTYPE
-

START DATE
2023/02/01

REASON FOR NOTIFICATION
Recurrence of an eradicated disease

DATE OF LAST OCCURRENCE
2022/05/27

CONFIRMATION DATE
2023/02/11

EVENT STATUS
On-going

END DATE
-

SELF-DECLARATION
NO

REPORT INFORMATION
REPORT NUMBER
Immediate notification

REPORT ID
IN_159266

REPORT REFERENCE
23-01568

REPORT DATE
2023/02/13

REPORT STATUS
Validated

NO EVOLUTION REPORT
-

EPIDEMIOLOGY
SOURCE OF EVENT OR ORIGIN OF INFECTION
Unknown or inconclusive

EPIDEMIOLOGICAL COMMENTS

An ASF surveillance system is in place for domestic and wild pigs. Samples taken from a local pig farm tested positive for African Swine Fever (ASF) virus. The ASF contingency plan was activated and pig movement from the index farm was immediately suspended until further notice. Pigs from the index farm will be killed and disposed of. Five pig farms within three kilometers of the index farm were inspected and no abnormalities were found. Movement of pigs on these farms were also suspended and samples from pigs will be tested. No reports of abnormalities from pig farms outside the 3 km zone have been received. Enhanced inspection, surveillance and investigation is continuing.

...
NEW OUTBREAKS

OB_113869 - 23-01568 - TA KWU LING, SHEUNG SHUI
OUTBREAK REFERENCE
23-01568

START DATE
2023/02/01

END DATE
-

DETAILED CHARACTERISATION
-

FIRST ADMINISTRATIVE DIVISION
North

SECOND ADMINISTRATIVE DIVISION
-

THIRD ADMINISTRATIVE DIVISION
-

EPIDEMIOLOGICAL UNIT
Farm

LOCATION
Ta Kwu Ling, Sheung Shui

Latitude, Longitude
22.538615 , 114.138329

(Approximate location)
OUTBREAKS IN CLUSTER
-

MEASURING UNIT
Animal

AFFECTED POPULATION DESCRIPTION

The government received reports on a number of pig carcasses disposed at the animal carcass collection station recently. Farms nearby were inspected and samples collected from pigs in a licensed pig farm tested positive for ASF virus.

SpeciesSusceptibleCasesDeathsKilled and Disposed ofSlaughtered/ Killed for commercial useVaccinated

Swine (DOMESTIC) NEW- - 45 - 0 -
TOTAL--45-0-
...
https://wahis.woah.org/#/in-review/4898
 
Hong Kong - African swine fever virus (Inf. with) - Follow up report 5

GENERAL INFORMATION
COUNTRY/TERRITORY OR ZONE
COUNTRY/TERRITORY

ANIMAL TYPE
TERRESTRIAL

DISEASE CATEGORY
Listed disease

EVENT ID
5323

DISEASE
African swine fever virus (Inf. with)

CAUSAL AGENT
African swine fever virus

GENOTYPE / SEROTYPE / SUBTYPE
-

START DATE
2023/10/26

REASON FOR NOTIFICATION
Recurrence of an eradicated disease

DATE OF LAST OCCURRENCE
2023/02/13

CONFIRMATION DATE
2023/11/07

EVENT STATUS
On-going

END DATE
-

SELF-DECLARATION
NO

REPORT INFORMATION
REPORT NUMBER
Follow-up report 5

REPORT ID
FUR_164362

REPORT REFERENCE
-

REPORT DATE
2023/12/13

REPORT STATUS
Validated

NO EVOLUTION REPORT
-

EPIDEMIOLOGY
SOURCE OF EVENT OR ORIGIN OF INFECTION
Unknown or inconclusive

EPIDEMIOLOGICAL COMMENTS

An ASF surveillance system is in place for domestic and wild pigs. Samples taken from a local pig farm tested positive for African Swine Fever (ASF) virus and subsequently classified as genotype II. The ASF contingency plan was activated and pig movement from the index farm was immediately suspended until further notice. Pigs from the index farm were killed and disposed of. Samples from one pig farm within the 3 km zone have been tested positive for ASF on 23 November 2023, classified as genotype II, and pigs were killed and disposed of. Pigs in another pig farm in San Tin, Yuen Long tested positive for ASF virus on 8 December 2023. Culling of the pigs is being arranged. Transportation from the farms concerned is suspended until further notice. Enhanced inspection, surveillance and investigation is continuing.

QUANTITATIVE DATA SUMMARY
MEASURING UNIT
Animal

SpeciesSusceptibleCasesDeathsKilled and Disposed ofSlaughtered/ Killed for commercial useVaccinated
Swine (DOMESTIC)
NEW - 19 - - - -
TOTAL 7591 78 10 7581 0 -
DIAGNOSTIC DETAILS
CLINICAL SIGNS
YES
...

NEW OUTBREAKS

OB_128836 - 23-13971 - SAN TIN, YUEN LONG, N.T.
OUTBREAK REFERENCE
23-13971

START DATE
2023/12/08

END DATE
-

DETAILED CHARACTERISATION
-

FIRST ADMINISTRATIVE DIVISION
Yuen Long

SECOND ADMINISTRATIVE DIVISION
-

THIRD ADMINISTRATIVE DIVISION
-

EPIDEMIOLOGICAL UNIT
Farm

LOCATION
San Tin, Yuen Long, N.T.

Latitude, Longitude
22.49426 , 114.0778

(Approximate location)
OUTBREAKS IN CLUSTER
-

MEASURING UNIT
Animal

AFFECTED POPULATION DESCRIPTION
The HKSAR government staff inspected a licensed pig farm at San Tin, Yuen Long and took samples from pigs for testing. Results showed that samples from 19 pigs tested positive for ASF virus.

SpeciesSusceptibleCasesDeathsKilled and Disposed ofSlaughtered/ Killed for commercial useVaccinated
Swine (DOMESTIC)
NEW - 19 - - - -​
TOTAL - 19 - - - -​

...
https://wahis.woah.org/#/in-review/5323
​

​
 
Press Releases

Local pig samples test positive for ASF virus

Thursday, December 28, 2023


The Agriculture, Fisheries and Conservation Department (AFCD) today (December 28) announced that samples taken from a pig farm in Yuen Long had tested positive for African Swine Fever (ASF) virus.

An AFCD spokesman said, "AFCD staff yesterday (December 27) inspected a licensed pig farm at San Tin, Yuen Long, and took samples from 25 pigs for testing. Results showed that samples from 20 pigs tested positive for ASF virus. The AFCD has immediately suspended transportation of any pigs from the farm concerned until further notice according to the contingency plan on ASF. The AFCD is arranging culling of all pigs, totalling around 1 100 on the farm concerned for the sake of prudence. The culling operation is expected to commence within this week."

He further said, "AFCD staff immediately notified all local pig farmers of this incident and reminded them to alert the AFCD immediately if abnormal health condition is observed in pigs. In addition, AFCD staff will inspect the other eight pig farms within three kilometres of the index farm. For the sake of prudence, the AFCD has also temporarily suspended movements of pigs on these farms until further notice. No reports of abnormalities from pig farms outside the three-kilometre zone have been received so far. AFCD staff are conducting visits in phases to all local licensed pig farms to ensure biosecurity measures have been properly implemented, and continuing close surveillance to detect pigs with abnormalities and if a farm is infected as early as possible."

The spokesman stressed that ASF is not a zoonotic disease and will not infect humans, hence does not cause any food safety risk. Pork cooked thoroughly is safe for consumption. Members of the public do not need to be concerned. The AFCD held a seminar for pig farmers on specific preventive measures and biosecurity advice against ASF, with a view to enhancing vigilance of the industry in prevention of further spread of ASF. Meanwhile, in order to strengthen the knowledge of local pig farmers of the clinical signs of ASF for early detection and reporting of abnormality of pigs, the AFCD has launched the Guidelines for Reporting Cases of African Swine Fever to assist pig farmers in identifying suspected cases for early reporting and to take appropriate follow-up actions.

The present case does not affect the operation of local slaughterhouses nor the overall supply of live pigs. Since June 2019, a daily clearance arrangement whereby live pigs will be slaughtered within 24 hours upon admittance has been imposed in Sheung Shui and Tsuen Wan slaughterhouses. Under the arrangement, lairages in different areas of the slaughterhouses will be cleared out and undergo thorough cleaning and disinfection every day to further enhance the biosecurity and minimise the risk of infection among pigs in the slaughterhouses.

The Food and Environmental Hygiene Department and the AFCD will continue to stringently conduct cleaning and disinfection of Mainland live pig transportation vehicles and their counterparts for local pigs at slaughterhouses to minimise the risk of cross-infection of ASF. Mainland live pig vehicles and local ones should be thoroughly cleaned and disinfected every time they leave the Sheung Shui Slaughterhouse (SSSH), and the respective designated positions for their cleaning and disinfection are separated. Manpower and equipment of the SSSH have been strengthened immediately for cleaning and disinfection of the vehicles. In light of these stepped-up measures, the slaughterhouses need not be closed and other pigs need not be culled.

As culling operation takes time, the AFCD will release updated operation information every day later on the departmental web page, www.afcd.gov.hk, for the public.

Ends
​
https://www.afcd.gov.hk/english/publications/publications_press/pr2954.html
 
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