Data source and unit of analysis
This study spanned 10 years from 2009 to 2018. Data for the risk
assessment were collected by country and by month. In case of Italy,
regions excluding Sardinia was unit of analysis. ASF outbreaks in
domestic pigs were based on immediate and follow-up notifications of OIE
(OIE, 2019). Data on pig production including the number of pig farms
and the pig population, the yields/carcass weight per pig, and the
annual pork production were obtained from the OIE (2018b), FAOSTAT
(2018), and National Institute of Statistics of Italy (Istat) (2019).
The statistics associated with legally imported live pigs and pig
products were obtained from the Animal Quarantine Statistics of Animal
and Plant Quarantine Agency (APQA, 2019). All data were stored in
Microsoft Excel 2016 for the subsequent analysis. A stochastic
quantitative risk assessment was conducted with these collected data.