Mass quarantine issued in Russia after unexplained death of plague researcher
Unconfirmed reports have suggested there was a laboratory accident.
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Unconfirmed reports have suggested there was a laboratory accident.
State health officials race to vaccinate residents by giving over 8,500 doses.
The FDA hasn't said where the cases are or how they're linked.
Taylor Farms stirred confusion on FDA test and provided a vague recall list.
Don't eat Taco Bell lettuce in Indiana, Kentucky, Michigan, Ohio, or West Virginia.
Cases have risen quickly as officials are working to identify a common source.
The number of cases falls from 1,100 to 437 with increased testing.
Trump official asked CDC staff to volunteer to screen travelers at airports.
CDC is working to move the infected American and six others to Germany.