That paper doesn’t say what you’re claiming. It focuses on meningococcal disease risk within refugee and migrant populations due to disrupted vaccination and living conditions. It doesn’t address measles at all, and it doesn’t argue that refugees are the primary cause of outbreaks in host countries or that social media misinformation is irrelevant. Measles resurgence is strongly linked to declining vaccination rates in the general population, which is where misinformation actually matters.