One is Susan Monarez, a former director of the C.D.C., who was fired by the White House in late August after Health and Human Services Secretary Robert F. Kennedy Jr. tried to remove her from her position and she resisted leaving. The other is Dr. Debra Houry, a former chief medical officer of the C.D.C., who quit partly in protest over the firing of Dr. Monarez.
I doin't know anything about either of those, but Monarez was apparently appointed by Trump then fired a month later for resisting RFK idiocy. A good way to go but a not so promising way to enter.