Table 1.

Protective efficacies of different immunizations against challenge with PHE-CoV

Vaccine or control	No. (%) of samples positive for virus by RT-PCR	No. of live mice	Protection rate (%)
IP	6 (60)	4	40
IPV	0 (0)	10	100
PBS	10 (100)	0	0
S1	2 (20)	10	100
IPV + 2S1	1 (10)	10	100
2S1+IPV	0 (0)	10	100
pVAX1	10 (100)	0	0