African Swine Fever in Sardinia Epidemiological situation 04 November 2011

Transcription

1 African Swine Fever in Sardinia Epidemiological situation 04 November 2011 Standing Committee on the Food Chain and Animal Health Bruxelles, 8 9 November

2 Pig breeding system in Sardinia (1998) Backyard % Intensive % Confined/Free ranging % Free ranging %

3 Swine Population (up to date at 31 july 2011) ASL Opened Breed BDN Total number of pigs BDN ASL_2_OLBIA 1 SASSARI ASL_1_SASSARI 2 OLBIA NUORO ASL_3_NUORO 4 LANUSEI ASL_5_ORISTANO ASL_4_LANUSEI 5 ORISTANO SANLURI ASL_6_SANLURI ASL_7_CARBONIA ASL_8_CAGLIARI 7 CARBONIA CAGLIARI Total Sardinia

4 Actual administrative organization ASL_1_SAS SARI ASL_5_ORISTANO ASL_6_SANLURI ASL_7_CARBONIA ASL_2_OLBIA ASL_3_NUORO ASL_4_LANUSEI ASL_8_CAGLIARI Ex province Sassari Nuoro Actual province Local Sanitary Unit Municipalities Sassari 1 Sassari 66 Olbia Tempio 2 Olbia 27 Nuoro 3 Nuoro 53 Ogliastra 4 Lanusei 23 Oristano Oristano 5 Oristano 88 Cagliari Medio Campidano 6 Sanluri 27 Carbonia Iglesias 7 Carbonia 23 Cagliari 8 Cagliari

5 Sardinia ASF Outbreaks/year

6 6

7 7

8 Asf outbreaks/year in sardinia Last epidemic period Beginning of the eradication plan Ipoendemic periods

9 Territories with outbreaks

10 Estimated population of wild boars The presence of wild boars in Sardinia is estimated around animals: an average of 4 6 animals per kmq of land useful. 10

11 Characterization of the territory and delimitation of areas, where wild boar population is fairly constant (Tot No. 32 Areas) 11

12 Factors for the characterization of Areas we considered: fruit bearing chestnut woods, agroforestry areas in general, broad leaved and mixed conifer broad leaved woods, Mediterranean bush and cork oak plantations. 12

13 Surveillance in wild boar population (samples per area )

14 hunting season Area with ASF + (pink) none wild boar was detected virus

15 Data from hunting seasons and laboratory results Hunting season Wb Tested Wb Seropositives Prevalence 95% (cl) Virus positive ,48 (5,08 10,82) ,04 (5,48 8,99) ,78 (10,59 20,19) ,06 (1,91 4,18) ,30 (4,08 9,53) ,17 (1,76 2,67) ,55 (2,07 3,13) ,63 (3,02 4,36) ,59(0,38 0,90) ,39 (0,22 0,67) ,86 (0,58 1,27) 0 15

16 Wild boars Infected areas still remain N. 3 active Areas of infected wild boars areas: Montarbu Aritzo, Orgosolo Dorgali Urzulei Baunei 16

17 African Swine Fever infected area in the wild boars to

18 Epidemiological situation November 2011 Domestic pigs (red spots) Wild boars (blue spots) Domestic pigs Sero + (yellow spots)

19 Epidemiological situation November 2011

20 28 27/10/11 28/10/2011 SASSARI BENETUTTI SS042 ID Suspected Confirmed Province Municipality Susceptible Cases deaths s destroyed Cod. herd 1 13/06/11 16/06/2011 SASSARI BONO SS /06/11 27/06/2011 NUORO ORUNE NU /06/11 29/06/2011 SASSARI BONO SS /06/11 01/07/2011 NUORO ORGOSOLO NU /07/11 13/07/2011 SASSARI BONO SS /09/11 15/09/2011 SASSARI BENETUTTI SS /09/11 21/09/2011 OGLIASTRA LANUSEI NU /09/11 19/09/2011 OGLIASTRA LANUSEI NU /09/11 14/09/2011 OGLIASTRA ARZANA OG /09/11 22/09/2011 OLBIA - TEMPIO MONTI SS /09/11 23/09/2011 ORISTANO SIAMAGGIORE OR /09/11 26/09/2011 ORISTANO SANTU LUSSURGIU OR /09/11 30/09/2011 ORISTANO NEONELI OR /09/11 30/09/2011 ORISTANO SANTULUSSURGIU OR /09/11 30/09/2011 OGLIASTRA GIRASOLE NU /09/11 30/09/2011 OGLIASTRA LOCERI NU /09/11 01/10/2011 CAGLIARI MURAVERA CA /09/11 30/09/2011 MEDIO CAMPIDANO GUSPINI CA /10/11 05/10/2011 OGLIASTRA TORTOLI' NU /10/11 06/10/2011 SASSARI BENETUTTI SS /10/11 15/10/2011 ORISTANO BARESSA OR /10/11 19/10/2011 NUORO NUORO NU /10/11 21/10/2011 OGLIASTRA BARI SARDO NU /10/11 25/10/2011 CAGLIARI DONORI CA /10/11 25/10/2011 CAGLIARI MONASTIR CA /10/11 27/10/2011 OGLIASTRA TORTOLI' NU /10/11 02/11/2011 OGLIASTRA CARDEDU NU074

21 Sassari province all the secondary outbreaks were within the protection and surveillance zone and were related to the first): BONO 1: primary outbreak on (clinical simptoms; PCR e MALMQUIST TEST +); BONO 2: secondary outbreak on (clinical simptoms; PCR +; IFD +); BONO 3: secondary outbreak on (clinical simptoms; PCR +). Benetutti 1: primary outbreak on (clinical simptoms; IFD +); Benetutti: secondary outbreak on (clinical simptoms; IFD +); Benetutti: secondary outbreak on (clinical simptoms; PCR +; IFD +). Bono and Benetutti are very near to the Province of Nuoro. Most likely the virus was introduced from these area. 21

22 Sassari 1th outbreak Bono 012SS011 accreditation NO fences yes Metal mesh Date swine sampling during abatement suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD neg neg neg

23 Sassari 2 th outbreak Bono 012SS025 accreditation NO fences yes inadequate Date swine sampling during abatement suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD pos pos neg

24 Sassari 3 th outbreak Bono accreditation 012SS115 NO fences SI Rete Date suspected confirmed abatement swine susceptible deaths slaughtered sampling during abatement Elisa PCR IFD pos pos pos Related with Bono 012ss011. Pig carcasses found nearby

25 Sassari 4 th outbreak Benetutti accreditation 008SS122 NO fences yes Stone wall and metal mesh Date suspected confirmed abatement swine susceptible deaths slaughtered sampling during abatement Elisa PCR IFD pos pos neg New breeding (purchase Nule). Merchant animals (butcher). Runs for business

26 Sassari 5 th outbreak Benetutti accreditation 008SS028 NO fences yes Metal mesh Date suspected confirmed abatement n.a. swine susceptible deaths slaughtered sampling during abatement Elisa PCR IFD Farming located in protection zone 008SS122 outbreak. 7 Swine serology testing on 21/02/2011 with negative results.

27 Sassari 6 th outbreak Benetutti 008SS042 accreditation NO fences Yes Metal mesh Date swine sampling during abatement suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD 10 swine serological testing with negative results on 01/02/2011.

28 More details 28

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30 Olbia Tempio province, ex Sassari province one outbreak was detected in: Monti: primary outbreak on The pigs wasn t identified. The origin of the infection is therefore attributable to the illegal introduction of animals and / or potentially infectious material from areas with active infection. Epidemiological survey shows that: The fences are not adequate, illegal administration of kitchen waste

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32 Olbia Tempio 1 th outbreak Monti accreditation 041SS162 NO fences yes Stone wall and metal mesh Date suspected confirmed abatement swine susceptible deaths slaughtered sampling during abatement Elisa PCR IFD neg possible contact with pigs or wild boars. Using kitchen waste. The farmer is part of a Hunting companionship

33 Cagliari province 3 outbreaks were detected in this District: Muravera : primary outbreak on (clinical symptoms; PCR+; IFD +); (sanctioned) Donori: primary outbreak on (clinical symptoms; PCR +; IFD+); Monastir: primary outbreak on (clinical symptoms; PCR +; IFD+). The origin of the infection was probably identified in the introduction of irregular swine or infected food; in fact all the farms infected was fined by the Authority for irregularities in: Inadequate structural and bio sicurity measures; movement of animals; identification of animals; registrations of births and deathss. None indemnity will be given to these farms.

34 Cagliari 1 th outbreak Muravera 039CA022 accreditation NO fences yes inadequate Date swine sampling during abatement suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD Neg Neg Neg Possible contact with wild boars and / or wild pigs

35 Cagliari 2 th outbreak Monastir accreditation fences Date swine sampling during abatement 038CA020 NO yes suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD

36 Cagliari 3 th outbreak Donori 020CA042 accreditation yes PSA PSC MVS fences Date swine sampling during abatement yes suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD The inspection visit was carried out by the Regional Prevention Service, ASL 8 Cagliari Veterinary Service and the NAS Carabinieri. Was made a specific records.

37 More details 37

38 Outbreaks and land use Monastir, Donori, Muravera 38

39 Medio Campidano 1 th outbreak Guspini 032CA230 accreditation NO fences yes inadequate Date swine sampling during abatement suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD Neg Neg Neg

40 Guspini municipality Medio Campidano Province (ex Cagliari province) 40

41 Oristano province Siamaggiore 23/09/2011 primary Origin: low level biosafety, irregular operation of the registry loading and unloading, Butchery introduction of uncontrolled waste and kitchen waste Santulussurgiu 24/09/2011 Primary (semi ) Origin: low level of biosecurity, fences are considered adequate but not enough to prevent contact with the outside world. 41

42 Oristano 1 th outbreak Siamaggiore 056OR006 accreditation NO fences yes inadequate Date swine sampling during abatement suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD Possible contact with wild animals. Employees with other pig farms, feeding bakery products, feed the dogs with butchery waste

43 Oristano 2 th outbreak Santu Lussurgiu 049OR055 accreditation No fences YES Confined free ranging Date swine sampling during abatement suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD

44 Oristano 3 th outbreak Neoneli accreditation fences Date swine sampling during abatement 032OR104 No yes suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD

45 4th outbreak Santu Lussurgiu accreditation fences Date swine sampling during abatement 049OR059 No yes suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD

46 5th outbreak Baressa accreditation fences Date swine sampling during abatement 012OR006 No yes suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD

47 Oristano Province 47

48 Oristano province, more details 48

49 Ogliastra province: 9 outbreaks foc 1 foc 2 foc 3 foc 4 foc 5 foc 6 foc 7 foc 8 foc 9 12/09/ /09/ /09/ /09/ /09/ /09/ /09/ /09/ /09/ /09/ /09/ /09/ /09/ /09/ /09/ /09/ /09/ /09/ /09/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /10/ /11/ /11/ /11/ /11/ /11/

50 Ogliastra province more details much of the province Ogliastra is able to sustain populations of wild pigs 50

51 Ogliastra 1 th outbreak Arzana 001OG179 accreditation NO fences yes inadequate Date swine sampling during abatement suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD pos Pos pos possible contact with wild boars and/or wild pigs

52 Ogliastra 2 th outbreak Lanusei 037NU001 accreditation yes PSA PSC MVS TRICH fences Date swine sampling during abatement yes suspected confirmed abatement (15 09) _07 10 susceptible deaths slaughtered Elisa PCR IFD It was made an inspection visit by the Regional Prevention Service, in conjunction with the NAS Carabinieri, Forest Rangers and Environmental Surveillance and ASL 4 Lanusei on and was specific records Pos

53 Ogliastra 3 th outbreak Lanusei 037NU188 fattening accreditation fences Date swine sampling during abatement NO yes suspected confirmed abatement _01 10 susceptible deaths slaughtered Elisa PCR IFD fattening pigs was introduced by the 037NU001. Continuous contact between the company for which transmission of the disease is due to incorrect business management on movement of personnel, exchange of equipment, food etc.. It was made an inspection visit by the Regional Prevention Service, in conjunction with the NAS Carabinieri, Forest Rangers and Environmental Surveillance and ASL 4 Lanusei on and special report was prepared

54 Ogliastra 4 th outbreak Loceri accreditation fences Date swine sampling during abatement 039NU009 No yes suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD The owner has parents who raise pigs

55 Ogliastra 5 th outbreak Girasole accreditation fences Date swine sampling during abatement 031NU032 NO yes suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD In the past there have been previous episodes of sero + in 2000

56 Ogliastra 6 th outbreak Tortolì accreditation 095NU024 No fences yes Inadequate Date suspected confirmed abatement swine susceptible deaths slaughtered sampling during abatement Elisa PCR IFD fences are inadequate and possible contact with pigs or wild boars, we assume the cause of the infection due to contact with wild boars and / or wilòd pigs The owner has parents who raise pigs

57 Ogliastra 7 th outbreak Barisardo accreditation fences Date swine sampling during abatement 005NU188 No yes suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD The farmer is part of a hunting companion

58 Ogliastra 8 th outbreak Tortolì accreditation fences Date swine sampling during abatement 095NU009 No yes suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD

59 Ogliastra 9 th outbreak Cardedu accreditation fences Date swine sampling during abatement 103NU074 No yes suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD

60 Nuoro province 60

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62 Nuoro province more detalis Nuoro Primary finding of an pig abandoned carcass in "Cortes" search of the virus was positive. Suspected 19 09, Confirmed Secondary, in the same location on it was suspected on clinical detection of an outbreak, confirmed on Desulo Primary, similar to what happened in Nuoro, it was found due to an outbreak of a wild pig found dead. The discovery occurred in the wild boar infected area, still in force 62

63 Nuoro 3 th outbreak Nuoro 051NU071 accreditation NO fences yes inadequate Date swine sampling during abatement suspected confirmed abatement susceptible deaths slaughtered Elisa PCR IFD neg Same location of pig carcass viruses found positive neg

64 Multi Seropositives in 2011 Orune (067NU003): two pigs sero+ during repeated checks on the farm (after 21 days) NO positive virological test. 1th sero (8 swine sampled 1 sero +) 2th sero (riprelievo dopo abbatimento del siero+, nuovo positivo. Decisione di abbattere tutti i 7 swine + 11 lattoni per precauzione) Orgosolo (062NU102), two pigs sero+ during repeated checks on the farm (after 21 days) NO positive virological test. 1th sero+, prelevati tutti 14 swine, 4 sero+ abatement dei 4 sero+ il (virus ) 2th ser+, swine prelevati di cui 1 sero+ Decisione di abbattere tutti i swine per precauzione il (nessun virus+) 64

65 Simple seropositives In 2011 two animals were detected seropositives without other signs of disease and virological laboratory tests were negative in: the Municipality of Dorgali (District of Nuoro); the Municipality of Arborea (District of Oristano). 65

66 MAP OF HIGH RISK ZONE (Decision 363/2005 ) OLBIA-TEMP IO SASS ARI NUORO 0 Orgosolo ORISTANO Ari tzo Urzulei -Baunei Montarbu OGLIASTRA MEDIO CAMPIDANO CAGLIARI CARBONIA-IGLESIAS

67 67

68 A possible redifinition of the ASF s High Risk Zone (Decision 363/2005/CE) The data of surveillance, the characterization of the territory for the presence/absence of communal land, where pig populations is uncontrolled, allows us to improve the reassess of the risk. 68

69 Risk assessment In order to find objective evidence of risk assessment has been suggested the following classification system based on the events of the last three years: outbreaks in domestic pig populations Sero + in domestic pigs Viruses+ in wild populations (hunting and more) Sero + in wild boars

70 In addition to these objective variables the inclusion of the municipalities within the "high risk" also takes account of other variables, less objectively measurable in advance, but that may significantly affect the qualification of the territory with respect to risk, namely; the implementation and management of the Registry swine reporting any pigs kept at the wild uncontrolled presence absence of regulation of grazing land in the municipal territory objectification of surveillance activities carried out pursuant to the eradication Plan.

71 From the check carried out It turns out that the above points are to be considered constant in all municipalities, since the verification activities of the Registry, serological sampling, and presence / absence of local regulation of grazing, have been implemented effectively. For the remaining proceeds to the following classification instead...

72 Outbreaks in domestic populations In the period considered outbreaks were detected in 6 / 8 provinces. Reduced in number, and "spot", were all readily resolved without any consequences in the surrounding area.

73 Seropositivity in domestic pigs The seropositivity in the domestic population is more concentrated in the "expected areas", with the exception of response in the province of Oristano

74 Virus+ in wild populations In the three years were observed and extinct four areas: Laconi (OR), Arzachena (OT), Bultei (SS) and Nuxis (CI). It still remains still standing the finding of the infected area of Urzulei (OG)

75 Wild boars seropositivity In view of the epochs and ages of the subjects found seropositive, the mapping of these subjects makes it possible redefinition of the infected areas. Also certified in an objective way, the lack of endemicity.

76 Presence of uncontrolled brady pigs population This is the most important element in the definition of "area at risk." In these contexts, the risk is probably more related to the area, as well as behaviors

77 bradabilità estimated This thematic map shows from green to brown, in order of increasing the percentage of the total land, with soil compatible with the presence of wild animals and / or wild pigs

78 African swine fever Total risk The sum total of all the factors considered and their proper "weighting", generates this thematic map, which is observed by light green (no risk) to red (highest risk) the municipalities and their risk classification.

79 Comparison with the current highrisk area This map shows the boundaries of existing high risk area (blue), shown with the municipalities that are objectively enrolled on the basis of the proposal.

80 SITUATION IN DOMESTIC PIGS There is still a viral reservoir of ASF in the population of pigs on high risk area. Within this population, the virus is present endemically, and periodic epidemic peaks occur The sporadic occurrence of primary outbreaks outside the high risk area, usually is followed by rapid eradication of the outbreaks without consequence in terms of viral persistence in the territory, if there aren t the typical factors of high risk area. So, in these case, we have to ensure timely and accurate measures, that get to effective extinction of the outbreak. 80

81 SITUATION IN WILD BOARS The situation in the wild boars, especially outside the high risk zone, is greatly improved: large infected areas were revoked for the absence of positive virological samples in wild boar. Only in the Centre Sardinia of Montarbu, Aritzo, Urzulei Baunei and Orgosolo Dorgali are confirmed the measures of the infected area. In the Infected Area of Orgosolo Dorgali is ongoing a program in order to increase veterinary checks on domestic pig populations reared in the wild. 81

82 Implementation action plan 2010 check list clinical controls and animal identification (in progress) TARGET 5 10% non accredited herds Checklist performed Registratio n not in accordance Tattoo not in accordance Heads unidentifie d 24% 2,3% 40,4% 11,23%

83 Serological controls 2010 tipology herds tested sero + accreditation (1th sampling) accreditation (2th sampling) annual control protection zone surveillance zone animal movements sampling during abatement 6 2 family salughter

84 Serological controls 2011 tipology herds tested sero + accreditation (1th sampling) accreditation (2th sampling) annual control protection zone 82 0 surveillance zone 2 0 animal movements 67 0 sampling during abatement 21 8 family salughter

85 Extraordinary measures immediate action: extraordinary plan audit inspections in all 469 ASF herds accredited and in HBLH (high biosecurity level herds) to be completed by 31/12/2011 comprehensive review of the accreditation system (Determina n /11/2011)

86 86