Table 2.

Skin thickness in infants and children measured for intradermal vaccination by ultrasonography.

					Skin thickness
Authors	Country	Year	Age of subjects	No. of subjects	Deltoid	Suprascapular	Upper back	Lumbar	Reference
Ploin, et al.	France	2011	4–7, 12–18, 54–66 months	373#	1.22 (1.01–1.41)	1.30 (1.08–1.49)	1.39 (1.20–1.57)*	1.31 (1.15–1.48)*	11
Saitoh, et al.	Japan	2015	2 months	78	1.67 (1.16–2.39)	1.83 (1.24–2.60)	N/A	N/A	12
			6 months	11	1.84 (1.52–2.29)	1.79 (1.57–2.14)
			13–15 years	82	1.81 (1.25–3.00)	2.43 (1.51–3.95)

Skin thickness is shown as mean (range) (mm).

^#Study subjects were infants aged 4–7 months (N = 118), children aged 12–18 months (N = 131), and children aged 54–66 months (N = 124). *Skin thickness at the upper back and lumbar sites was measured only in some children aged 54–66 months (N = 43).

Abbreviations: N/A, not available