When a 13-year-old girl in Aichi Prefecture received a vaccination voucher mailed to her home at the end of July, her father wasn't sure if she should be inoculated.
"Would it be all right for a child still going through puberty to be vaccinated? To be honest, I was worried," he said.
The father looked into the possible side effects on the health ministry's website and explained what he'd read to her.
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