Actually the Washington Post broke the story (according to the AP).
According to the Washington Post, the people from the CDC who interacted with the quarantined patients all had full protective gear.
Allegedly there were social workers from HHS also sent to help assist who were not trained in how to don full gear and so were wearing just masks and gloves.
Note this all happened back at the end of January. So it seems unlikely that anyone was actually exposed, unless you think that there are HHS workers who got sick and it was kept out of the news.