@JT_Grindrod @AndrewNoymer @SixandLaura @CPageYYC Other people would not have gotten measles as young adults in significant numbers, they'd be immune.
@JT\U Grindrod@AndrewNoymer@SixandLaura@CPageYYC其他人在年轻时不会感染麻疹，他们会免疫。
@JT_Grindrod @AndrewNoymer @SixandLaura @CPageYYC Other people would not have gotten measles as young adults in significant numbers, they'd be immune.
@JT\U Grindrod@AndrewNoymer@SixandLaura@CPageYYC其他人在年轻时不会感染麻疹，他们会免疫。