Those people were fired by the Trump administration in 2018.
The previous administration converted the highly successful infrastructure they built up while responding to the Ebola virus into permanent infrastructure which was quickly dismantled by the current administration.
Quoting: "funding for the CDC’s global disease outbreak prevention efforts had been reduced by 80%, including funding for the agency’s efforts in China. But that was the result of the anticipated depletion of previously allotted funding, not a direct cut by the Trump administration.
Since January 2019, actual funding (vs. requested/proposed funding) is controlled by the House leadership of the opposition party.