Table 2. HPV status of the samples.

ID	Infant sex	Delivery mode (VD vaginal delivery, CS caesarean section)	Gestation weeks	Infant oral (HPV type)	Timepoint when infant oral samples were collected	Mother’s milk (HPV type)	Timepoint when breast milk samples were collected
1	female	VD	42.0	(-)	at 2 months		at birth
2	female	VD	41.0	33,59	at birth		at birth
3	female	CS	35.4	(-)	at birth		at birth
4	female	VD	40.1		at 2 months		at birth
5	male	VD	37.6		at 2 months		at 2 months
6	female	VD	40.1		at 2 months		at birth
7	male	VD	42.0		at 2 months		at birth
8	female	VD	39.4		at 2 months		at birth
9	female	VD	38.3		at 2 months	(-)	at birth
10*	male	VD	38.0		at 2 months		at birth
11*	male	VD	38.0	18	at 2 months		at birth
12	male	CS	38.5		at 2 months		at birth
13	male	CS	42.2		at 2 months		at birth
14	female	VD	41.5	18	at 2 months		at birth
15	male	VD	41.0		at 2 months		at birth
16	male	VD	39.0		at birth		at birth
17	female	CS	40.0	16	at birth		at birth
18	male	CS	42.1		at 2 months		at birth
19	female	CS	42.4	6	at 2 months		at birth
20	female	CS	41.1		at 2 months		at birth
21	female	VD	39.6		at 2 months		at birth
22	male	CS	38.4	66	at birth	(-)	at birth
23	female	VD	39.0	16,33(-)	at birth		at birth
24	male	VD	42.0		at birth	16	at birth
25	female	VD	40.4	16	at birth		at birth
26	female	CS	39.0		at 2 months		at birth
27	male	VD	40.4	16	at birth		at birth
28	female	VD	41.0	70	at 2 months		at birth
29	female	CS	39.1		at 2 months		at birth
30	female	VD	41.6	16	at 2 months		at birth
31	female	CS	40.6		at 2 months		at birth
32	male	VD	38.3	66	at birth		at 2 months
33	female	VD	40.6		at 2 months		at 2 months
34	female	VD	40.0	58	at birth	6	at birth
35	female	CS	39.0		at birth	6	at birth
36	female	CS	41.4		at birth	(-)	at birth
37	male	VD	39.6	6(-)	at birth		at birth
38	male	CS	35.3	16	at birth	(-)	at birth
39	male	VD	36.6	6(-)	at birth		at birth
40	male	CS	42.0	16	at birth		at 2 months

*twins

(-) samples not included in the analyses because of the poor DNA quality