Assessing the risk of highly pathogenic avian influenza H5N1 transmission through poultry movements in Bali, Indonesia.
Indonesia continues to report the highest number of human and poultry cases of highly pathogenic avian influenza H5N1. The disease is considered to be endemic on the island of Bali. Live bird markets are integral in the poultry supply chain on Bali and are important, nutritionally and culturally, for the rural and urban human populations. Due to the lack of biosecurity practiced along the supply chain from producer to live bird markets, there is a need to understand the risks associated with the spread of H5N1 through live bird movements for effective control. Resources to control H5N1 in Indonesia are very limited and cost effective strategies are needed. We assessed the probability a live bird market is infected through live poultry movements and assessed the effects of implementing two simple and low cost control measures on this risk. Results suggest there is a high risk a live bird market is infected (0.78), and risk mitigation strategies such as detecting and removing infected poultry from markets reduce this risk somewhat (range 0.67-0.76). The study demonstrates the key role live poultry movements play in transmitting H5N1 and the need to implement a variety of control measures to reduce disease spread.
University of Sydney, Sydney, Australia. Electronic address: sharon.roche@daff.gov.au.
Sharon E
SE
Roche
Massey University, Palmerston North, New Zealand.
Naomi
N
Cogger
Australian Department of Agriculture, GPO Box 858, Canberra, Australian Capital Territory, Australia.
M Graeme
MG
Garner
Disease Investigation Centre Denpasar, Ministry of Agriculture, Indonesia.
Anak Agung Gde
AA
Putra
University of Sydney, Sydney, Australia.
Jenny-Ann L M L
JA
Toribio
D000818:Animals; D002645:Chickens; D003132:Commerce; D007214:Indonesia / Q000453:epidemiology; D053124:Influenza A Virus, H5N1 Subtype / Q000502:physiology*; D005585:Influenza in Birds / Q000453:epidemiology / Q000635:transmission* / Q000821:virology; D011201:Poultry Diseases / Q000453:epidemiology / Q000635:transmission* / Q000821:virology; D011336:Probability; D018570:Risk Assessment
Disease control; HPAI H5N1; Indonesia; Live bird markets; Poultry; Risk assessment