What are these marks on the junior idols skin?.

Idolover90

Active Member
Feb 9, 2021
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It's not the first time i see these marks on the girls' skin, it looks weird, what can they be?.
 

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Those are immunization impressions. You never got shot in the arm as a kid?
 
BCG Tuberculosis Vaccine
BCG_apparatus_ja2.jpg

Not every country requires children be vaccinated against TB, and different countries use different delivery methods. BCG vaccine must be delivered only into the skin, not into the muscle, and so in Japan they use a device to sort of scratch it on to kids' upper arms. The "Stamp Syringe" スタンプ注射 marks essentially double as proof of vaccination.
 
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BCG Tuberculosis Vaccine
View attachment 2789560

Not every country requires children be vaccinated against TB, and different countries use different delivery methods. BCG vaccine must be delivered only into the skin, not into the muscle, and so in Japan they use a device to sort of scratch it on to kids' upper arms. The "Stamp Syringe" スタンプ注射 marks essentially double as proof of vaccination.
Thank you so much for the info : )
 
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