#Respiratory Illness in a #Piggery Associated with the First Identified #Outbreak of #Swine #Influenza in #Australia: Assessing the #Risk to #Human Health and #Zoonotic Potential (Trop Med Infect Dis., abstract)

[Source: US National Library of Medicine, full page: (LINK). Abstract, edited.]

Trop Med Infect Dis. 2019 Jun 25;4(2). pii: E96. doi: 10.3390/tropicalmed4020096.

Respiratory Illness in a Piggery Associated with the First Identified Outbreak of Swine Influenza in Australia: Assessing the Risk to Human Health and Zoonotic Potential.

Smith DW1,2, Barr IG3,4, Loh R5, Levy A6, Tempone S7, O’Dea M8, Watson J9, Wong FYK10, Effler PV11,12.

Author information: 1 Department of Microbiology, PathWest Laboratory Medicine WA, Nedlands, WA 6009, Australia. david.smith@health.wa.gov.au. 2 Faculty of Health and Medical Sciences, University of Western Australia, Nedlands, WA 6009, Australia. david.smith@health.wa.gov.au. 3 World Health Organization (WHO) Collaborating Centre for Reference and Research on Influenza, at The Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia. Ian.Barr@influenzacentre.org.au. 4 Department of Microbiology and Immunology, University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC 3000, Australia. Ian.Barr@influenzacentre.org.au. 5 Sustainability and Biosecurity, Department of Primary Industries and Regional Development, Perth, WA 6151, Australia. richmond.loh@dpird.wa.gov.au. 6 Department of Microbiology, PathWest Laboratory Medicine WA, Nedlands, WA 6009, Australia. avram.levy@health.wa.gov.au. 7 Communicable Disease Control Directorate, Department of Health Western Australia, Perth, WA 6004, Australia. simone.tempone@health.wa.gov.au. 8 School of Veterinary Medicine, Murdoch University, Perth, WA 6150, Australia. M.ODea@murdoch.edu.au. 9 CSIRO Australian Animal Health Laboratory, Geelong, VIC 3219, Australia. James.Watson@csiro.au. 10 CSIRO Australian Animal Health Laboratory, Geelong, VIC 3219, Australia. Frank.Wong@csiro.au. 11 Faculty of Health and Medical Sciences, University of Western Australia, Nedlands, WA 6009, Australia. paul.effler@health.wa.gov.au. 12 Communicable Disease Control Directorate, Department of Health Western Australia, Perth, WA 6004, Australia. paul.effler@health.wa.gov.au.

 

Abstract

Australia was previously believed to be free of enzootic swine influenza viruses due strict quarantine practices and use of biosecure breeding facilities. The first proven Australian outbreak of swine influenza occurred in Western Australian in 2012, revealing an unrecognized zoonotic risk, and a potential future pandemic threat. A public health investigation was undertaken to determine whether zoonotic infections had occurred and to reduce the risk of further transmission between humans and swine. A program of monitoring, testing, treatment, and vaccination was commenced, and a serosurvey of workers was also undertaken. No acute infections with the swine influenza viruses were detected. Serosurvey results were difficult to interpret due to previous influenza infections and past and current vaccinations. However, several workers had elevated haemagglutination inhibition (HI) antibody levels to the swine influenza viruses that could not be attributed to vaccination or infection with contemporaneous seasonal influenza A viruses. However, we lacked a suitable control population, so this was inconclusive. The experience was valuable in developing better protocols for managing outbreaks at the human-animal interface. Strict adherence to biosecurity practices, and ongoing monitoring of swine and their human contacts is important to mitigate pandemic risk. Strain specific serological assays would greatly assist in identifying zoonotic transmission.

KEYWORDS: Australia; human; influenza; pandemic; swine

PMID: 31242646 DOI: 10.3390/tropicalmed4020096

Keywords: Swine Influenza; Pigs; Human; Serology; Australia.

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gimi69

I am an Italian blogger, active since 2005 with main focus on emerging infectious diseases such as avian influenza, SARS, antibiotics resistance, and many other global Health issues. Other fields of interest are: climate change, global warming, geological and biological sciences. My activity consists mainly in collection and analysis of news, public services updates, confronting sources and making decision about what are the 'signals' of an impending crisis (an outbreak, for example). When a signal is detected, I follow traces during the entire course of an event. I started in 2005 my blog ''A TIME'S MEMORY'', now with more than 40,000 posts and 3 millions of web interactions. Subsequently I added an Italian Language blog, then discontinued because of very low traffic and interest. I contributed for seven years to a public forum (FluTrackers.com) in the midst of the Ebola epidemic in West Africa in 2014, I left the site to continue alone my data tracking job.

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