Table 1.

Morbidity and mortality in VLP‐ and mock‐vaccinated chickens intranasally challenged with 10⁵EID₅₀ of A/chicken/Korea/ES/2003 (H5N1) highly pathogenic avian influenza (HPAI) virus

Group*	Mortality [number dead/total (MDT**)]	Morbidity (number ill/total)
28 VLP	0/8	1/8
29 VLP	0/8	1/8
210 VLP	0/7***	0/7
Mock	8/8 (2·4)	6/8

^*A dose of VLP vaccine as indicated by units of hemagglutination activity.

^**MDT – mean death time denoted in days.

^***One bird died before challenge study because of cannibalism.