Two unvaccinated people die of measles in US state of Pennsylvania
- Pennsylvania 近 90 天出现 4 次
- 上一次：同一天稍早 · Two unvaccinated people die from measles in Pennsylvania, officials confirm
发生了什么
Experts warn that declining vaccination rates have opened the door for resurgence of disease once largely eradicated.
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为什么在扩散
时间线
- Al Jazeera 最先出现Al Jazeera
- Time 开始报道Time