Table 1.

Distribution of EBV and HPV infection in NPC cases

NPC cases	N	EBV+	HPV+	HPV 16	HPV 18	HPV 31	HPV 33	HPV 35	HPV 45	HPV 59	Untyped HPV cases
NPC type I	2	2	1				1
NPC type II	6	6	1		1
NPC type III	62	62	22	2	1	5		1	1	4	8
Total	70	70	24	2	2	5	1	1	1	4	8

N: Number of patients