The situation with the CDC lab in Atlanta — apparently a manufacturing defect — has already spurred finger pointing between various federal health agencies and officials, who are all under intense scrutiny amid a major public health crisis. President Donald Trump has repeatedly tried to reassure the public — and the sinking stock market — that it’s under control.

It is unclear which senior health officials, at which agencies, knew about the CDC test problems and when they learned of them. HHS is convening a team of scientists from outside the CDC to investigate the test development and its flaws, according to an HHS spokesperson. HHS gave no further details Sunday night on who the experts are, or whether they included government as well as outside scientists.