Chemical Found In Yale Med School Coffee Machine

NEW HAVEN, Conn. (AP) _ Yale officials say a laboratory chemical has been detected in a coffee machine suspected to have caused four people at the university’s medical school to fall ill.
University spokeswoman Karen Peart said Tuesday that independent laboratory tests on a single-service, pod-style coffee machine at the medical school indicated the presence of sodium azide.
She says the substance is commonly used in laboratories as a preservative and that symptoms of sodium azide exposure