Giuseppe
Emeritus
Influenza A H1N1, Chile (OIE, WAHID Interface, August 21 2009, edited)
[Original Full Document: LINK. EDITED.]
Influenza A H1N1, Chile
Information received on 21/08/2009 from Dr Ternicier Claudio, Jefe Divisi?n Protecci?n Pecuaria, Servicio Agr?cola y Ganadero, Ministerio de Agricultura , Santiago , Chile
-- Summary
Report type Immediate notification
Start date 23/07/2009
Date of first confirmation of the event 20/08/2009
Report date 21/08/2009
Date submitted to OIE 21/08/2009
Reason for notification Emerging disease
Morbidity 61.4 %
Mortality 0 %
Zoonotic impact No
Causal agent Influenza A Virus
This event pertains to the whole country
-- New outbreaks
Summary of outbreaks: Total outbreaks: 2
Location(s): VALPARAISO (Las Palmas, Quilpue, Valparaiso; Pucal?n, Quillota, Nogales)
Total animals affected: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - 59554 - 36585 - 0 - 0 - 0
Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
- Birds - 61.43% - 0.00% - 0.00% - 0.00%
* 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 affected farms are turkey breeding premises belonging to the same company, vertically integrated, where appropriate biosecurity measures are applied.
Outbreak no. 1 is composed of 5 breeding premises. The outbreak started in premises no. 1 and through horizontal transmission, it reached 3 other premises.
In the outbreak n. 2 of 5 existing sectors are affected.
Prior to the appearance of clinical signs, some birds were exposed to people showing respiratory symptoms.
The affected premises were systematically monitored through serological testing with negative results until 28 July 2009.
Serotyping allowed to exclude the presence of H5 and H7 virus and allowed to confirm detection of A/H1N1 2009 pandemic influenza virus 2009.
Samples were sent to the Public Health Institute of Chile (ISP), Ministry of Health. The ISP confirmed the presence of A/H1N1 2009 pandemic influenza virus 2009 using real time PCR. The RT-PCR for seasonal H1 and H3 influenza resulted negative.
Samples will be sent to the OIE Reference Laboratory.
-- Control measures
Measures applied
Quarantine
Screening
Disinfection of infected premises/establishment(s)
Vaccination prohibited
No treatment of affected animals
Measures to be applied
No other measures
-- Diagnostic test results
Laboratory name and type Public Health Institute (National laboratory)
Tests and results: Species - Test - Test date - Result
- Birds - real-time PCR - 20/08/2009 - Positive
- Birds - virus sequencing - 21/08/2009 - Pending
Laboratory name and type Quarantine Station and Lo Aguirre Laboratory (National laboratory)
Tests and results: Species - Test - Test date - Result
- Birds - agar-gel immunodiffusion (AGID) - 15/08/2009 - Positive
- Birds - antibody detection ELISA - 14/08/2009 - Positive
- Birds - haemagglutination inhibition test (HIT) - 19/08/2009 - Positive
- Birds - neuraminidase inhibition assay - 19/08/2009 - Positive
-- Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
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[Original Full Document: LINK. EDITED.]
Influenza A H1N1, Chile
Information received on 21/08/2009 from Dr Ternicier Claudio, Jefe Divisi?n Protecci?n Pecuaria, Servicio Agr?cola y Ganadero, Ministerio de Agricultura , Santiago , Chile
-- Summary
Report type Immediate notification
Start date 23/07/2009
Date of first confirmation of the event 20/08/2009
Report date 21/08/2009
Date submitted to OIE 21/08/2009
Reason for notification Emerging disease
Morbidity 61.4 %
Mortality 0 %
Zoonotic impact No
Causal agent Influenza A Virus
This event pertains to the whole country
-- New outbreaks
Summary of outbreaks: Total outbreaks: 2
Location(s): VALPARAISO (Las Palmas, Quilpue, Valparaiso; Pucal?n, Quillota, Nogales)
Total animals affected: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
- Birds - 59554 - 36585 - 0 - 0 - 0
Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
- Birds - 61.43% - 0.00% - 0.00% - 0.00%
* 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 affected farms are turkey breeding premises belonging to the same company, vertically integrated, where appropriate biosecurity measures are applied.
Outbreak no. 1 is composed of 5 breeding premises. The outbreak started in premises no. 1 and through horizontal transmission, it reached 3 other premises.
In the outbreak n. 2 of 5 existing sectors are affected.
Prior to the appearance of clinical signs, some birds were exposed to people showing respiratory symptoms.
The affected premises were systematically monitored through serological testing with negative results until 28 July 2009.
Serotyping allowed to exclude the presence of H5 and H7 virus and allowed to confirm detection of A/H1N1 2009 pandemic influenza virus 2009.
Samples were sent to the Public Health Institute of Chile (ISP), Ministry of Health. The ISP confirmed the presence of A/H1N1 2009 pandemic influenza virus 2009 using real time PCR. The RT-PCR for seasonal H1 and H3 influenza resulted negative.
Samples will be sent to the OIE Reference Laboratory.
-- Control measures
Measures applied
Quarantine
Screening
Disinfection of infected premises/establishment(s)
Vaccination prohibited
No treatment of affected animals
Measures to be applied
No other measures
-- Diagnostic test results
Laboratory name and type Public Health Institute (National laboratory)
Tests and results: Species - Test - Test date - Result
- Birds - real-time PCR - 20/08/2009 - Positive
- Birds - virus sequencing - 21/08/2009 - Pending
Laboratory name and type Quarantine Station and Lo Aguirre Laboratory (National laboratory)
Tests and results: Species - Test - Test date - Result
- Birds - agar-gel immunodiffusion (AGID) - 15/08/2009 - Positive
- Birds - antibody detection ELISA - 14/08/2009 - Positive
- Birds - haemagglutination inhibition test (HIT) - 19/08/2009 - Positive
- Birds - neuraminidase inhibition assay - 19/08/2009 - Positive
-- Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
-
------