1. In general, difficulties occur where a non-member country adopts an approach different from the Union's approach (e.g. to vaccination), or where problems arise in the Union as a result of different consumption patterns (e.g. threadworm in horsemeat).
2. HICP sub-indices involving tariff prices are, in practice, either obtained directly from suppliers or computed by the Members States based on data on tariff prices and their underlying consumption patterns provided by suppliers.
