The first four months of 2025 have seen an 11-fold increase in global measles cases around the world compared to last year. And because measles is the most contagious disease known to science — 9 in 10 unvaccinated people will contract it if exposed to one infected person, and measles vaccination rates are waning globally — the problem is likely to get worse before it gets better.
Get all the details in the latest edition of Outbreak Insider.