Table 1. Mutations detected in the CNS of a ferret infected with virus of the H5N1 subtype.

Three substitutions were found in common between the cerebellum (CL) and cerebrospinal fluid (CSF). REF refers to the nucleotide reference; ALT to the nucleotide alternative variant; REF-AA amino acid reference; ALT-AA to substitution. Sequencing was done using MySeq Illumina platform.

Sample	Segment	Position	REF	ALT	REF-AA	ALT-AA	Frequency	Coverage
CL	PB1	554	A	G	E	G	0.994	5011
CL	PB1	1978	G	A	A	T	0.662	4683
CL	NP	402	T	G	I	M	0.991	7980
CSF	PB1	554	A	G	E	G	0.993	7934
CSF	PB1	1978	G	A	A	T	0.534	7930
CSF	NP	402	T	G	I	M	0.992	7986