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Table 2 Risk factors for medium-scale farms for ASF reports between first and second sampling (n = 49), 2010–2011

From: A longitudinal survey of African swine fever in Uganda reveals high apparent disease incidence rates in domestic pigs, but absence of detectable persistent virus infections in blood and serum

  aASF between
  Nob (%) Yesb (%) NAb (%) Total (n)
Awareness c Not aware about ASF 50 0 50 2
  Aware about ASF 85 4 11 46
  NA d 100 0 0 1
Biosecurity measures e At least one 83 4 13 24
  None 85 5 10 20
  NA 80 0 20 5
Borrow boar No 100 0 0 17
  Yes 78 4 19 27
  NA 60 20 20 5
Breed Local 71 14 14 7
  Improved 85 2 12 41
  NA 100 0 0 1
Duration of enterprises      
  Less or equal to 10 years 85 3 12 34
  Greater than 10 years 75 8 17 12
  NA 100 0 0 3
Ectoparasites control No 75 0 25 4
  Yes 86 2 12 43
  NA 50 50 0 2
Feeding swill No 88 6 6 17
  Yes 81 3 16 32
  NA 0 0 100 1
Labour Family 76 6 18 34
  Hired 100 0 0 9
  NA 100 0 0 6
Pets present on farm No 84 4 12 25
  Yes 86 0 14 21
  NA 67 33 0 3
Piglets housing Piglets housing present 80 5 15 40
  Piglets not housed 100 0 0 8
  NA 100 0 0 1
Pig housing Pig housing present 82 5 14 44
  No pig housing 100 0 0 4
  NA 100 0 0 1
Replacement stock Own farm 87 0 13 15
  From neighbouring farms 82 6 12 33
  NA 100 0 0 1
Wild pigs (bush pigs) contact No 82 6 12 33
  Yes 100 0 0 1
  NA 87 0 13 15
  1. a ASF between- Reports of ASF on farms during the one year between the first and second sampling visits. This is the dependent variable and the row variables in the table are the independent variables
  2. b The numbers in each of the cells under columns No, Yes and NA are relative proportions (percentages) of the total number of pigs (column Total, n) in each of the table rows
  3. c Awareness as a variable encompasses those farms where farmers expressed having knowledge on the symptoms, spread, control and prevention measures for ASF
  4. d Missing values
  5. e Biosecurity measures considered were presence of a fence to the farm, controlled entrance to the pig pens (presence of gate/door) and presence of foot baths