text_1: Measles is one of the most common causes of child blindness worldwide.
text_2: "Gounder suggested Paul should be singing a different tune about vaccinations, one that mentions, ""Measles is one of the most common causes of child blindness worldwide."" She was careful to say worldwide. In developed countries, measles does not typically lead to blindness. But in low-income countries, it is certainly one of the leading drivers of blindness in children, experts agree."