@DataDrivenMD "Higher risk for polio exposure" used to mean travel to a few non-elimination countries. What does it mean now?
@DataDrivenMD “接触脊髓灰质炎的风险更高”曾经意味着前往一些非消除脊髓灰质炎的国家。现在是什么意思？
@DataDrivenMD "Higher risk for polio exposure" used to mean travel to a few non-elimination countries. What does it mean now?
@DataDrivenMD “接触脊髓灰质炎的风险更高”曾经意味着前往一些非消除脊髓灰质炎的国家。现在是什么意思？