Table 1. Distribution of HPAI-H5N8 outbreaks per type of poultry holdings, species and duck production in France, 2016–2017 epidemic (n = 484 outbreaks).

Parameter	Number of outbreaks	Total	Percentage
Type of poultry holdings in terms of commercial/backyard production
Commercial poultry holdings	464	484	95.9
Backyard poultry holdings	20	484	4.1
Type of species
Duck	395	484	81.6
Chicken	59	484	12.2
Multispecies	28	484	5.8
Type of duck holding in terms of production stages
Breeding + Force-feeding	155	380^a	40.8
Breeding	131	380^a	34.5
Force-feeding	78	380^a	20.5
Other	16	380^a	4.2

^a Information on production stages was available only for 380 outbreaks.