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Table 1 Overview of peer reviewed prevalence studies performed in Europe since the year 2000

From: Prevalence of Lawsonia intracellularis in pig herds in different European countries

Country

Age categories of sampled animals

Diagnostic material and method

Herd-Prevalence (%)

Within-herd-Prevalence (%)

Source

Denmark

GP, FP

Faeces: PCR

93.7

25

[9]

France

NP, GP, FP, S

Blood: IFA

88

 

[10]

Germany

NP, GP, FP, S

Faeces: PCR

30*

14**

19.4*

7.3**

[11]

Germany

NP, GP; FP, S, B

Blood: IFAT

81.3

43.2

[12]

Germany

SP,

NP

Faeces: nPCR

Blood: ELISA

6.7

39.2

0.7

5.2

[13]

Great Britain

NP, GP, FP

Blood: IFA

93.1

 

[14]

Republic of Ireland

NP, GP, FP

Blood: IFA

92.9

 

[14]

Spain

NP, GP, FP, S

Blood: IFA

68.96

 

[10]

Sweden

GP

Faeces and rectal swabs: nPCR

47.6

27.1

[15]

  1. A herd was defined positive, if at least one sample was positive for L. intracellularis (herd- prevalence). The within- herd prevalence is the number of samples positive per analysed samples per herd within all herds per country. Age categories were classified as follows: Suckling pigs (SP) = before weaning, Nursery pigs (NP) = weaner till ~ 25 kg, Growing pigs (GP) = ~ 25- 40 kg, Finishing pigs (FP) = ~ 40 kg till slaughter, Sows (S), Boars (B)
  2. Diagnostic methods: Enzyme linked immunosorbent essay (ELISA), indirect Immunofluorescence assay (IFA), indirect Immunofluorescence antibody test (IFAT), Polymerase chain reaction (PCR), nested PCR (nPCR)
  3. * = animals with diarrhoea; ** = animals without diarrhoea