African swine fever,
Papua New Guinea
Information received on 30/03/2020 from Dr Ilagi Puana, Chief Veterinary Officer, Veterinary Services, National Agriculture Quarantine and Inspection Authority (NAQIA), Port Moresby, Papua New Guinea
Summary
Report type Immediate notification
Date of start of the event 05/03/2020
Date of confirmation of the event 25/03/2020
Report date 30/03/2020
Date submitted to OIE 30/03/2020
Reason for notification First occurrence of a listed disease in the country
Causal agent African swine fever virus
Nature of diagnosis Laboratory (advanced)
This event pertains to a defined zone within the country
New outbreaks (4)
Outbreak cluster 1 Tubiri, Tente, Was and Pulum Villages, Mendi Munihu , Southern Highlands (4 outbreaks)
Date of start of the outbreak 05/03/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Swine 700 500 396 1 0
Affected population Free ranging pigs
Summary of outbreaks Total outbreaks: 4
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Swine 700 500 396 1 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Swine 71.43% 56.57% 79.20% 56.71%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments The incident involving death of about 396 free ranging pigs was first reported by Provincial Livestock Officer based in Mendi town on 5th March, 2020. The clinical symptoms were primarily sudden deaths with some pigs surviving the outbreak. The National Agriculture Quarantine and Inspection Authority (NAQIA) dispatched an investigating team on 11th March 2020 comprising a veterinarian, an epidemiologist and laboratory staff supported by local provincial livestock officers on the ground. Five pigs were investigated and whole blood and sera collected and subjected initially to African swine fever (ASF) antibody (Ab) rapid test kit. One dead pig was subjected to post-mortem examination and tissue samples collected. Two out of 4 pigs showed positive to ASF Ab rapid test kit. Samples were dispatched to the Veterinary Laboratory in Port Moresby. Samples were tested using ASF antigen ELISA test and repeat rapid test kit. Two pigs showed positive for ASF Ag ELISA test on sera and whole blood samples. Samples were dispatched to Australian Animal Health Laboratory (AAHL) on 20th March, 2020 for confirmatory PCR testing. On 25 March, AAHL confirmed African swine fever.
Control measures
Measures applied
  • Disinfection
  • Zoning
  • Quarantine
  • Movement control inside the country
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • Stamping out
  • Surveillance within containment and/or protection zone
  • Surveillance outside containment and/or protection zone
Diagnostic test results
Laboratory name and type Species Test Test date Result
Veterinary Laboratory, Port Moresby (National laboratory) Swine antigen (Ag) detection ELISA 20/03/2020 Positive
Australian Animal Health Laboratory (AAHL) (OIE Reference Laboratory) Swine polymerase chain reaction (PCR) 25/03/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations