TABLE 1.

General characteristics of S. Typhi phages I to VII^a

Vi phage	Morphology	Genome size (bp)	G+C ratio (%)	No. of CDSs (no. of introns)
I	Myoviridae	157,061	45.37	210 (0)
II	Siphoviridae	45,051	47.03	52 (0)
III	Podoviridae	38,969	50.75	60 (1)
IV	Podoviridae	44,618	47.12	62 (0)
V	Podoviridae	38,582	48.98	52 (1)
VI	Podoviridae	38,367	49.47	51 (1)
VII	Podoviridae	39,248	49.57	54 (1)

^aThis data summarizes the basic information collected for all seven Vi phages, including genome size and number of predicted proteins.