The nation's top infectious disease expert said Thursday that the US is not headed in a positive direction when it comes to controlling the novel coronavirus pandemic.

But the number of new cases began climbing again after multiple states decided to begin reopening earlier than was recommended.

White House guidelines said that states should see either a two-week decrease in new cases or a two-week decline in their share of positive coronavirus tests before reopening.

But according to The New York Times, 18 out of the 30 states that began reopening as of May 7 were still seeing a daily uptick in new cases, while nine out of the 30 states did not have a decline in their share of positive tests.

Florida, Texas, Arizona, and California all reported record-high numbers of new cases this week; according to CNN, Florida reported nearly 9,500 new cases on Friday, and Texas reported 7,555 new cases after reporting around 8,000 new cases for two consecutive days.

Florida is reporting more new cases per day, on average, than any other state, CNN said, with California and Texas coming in a close second and third, respectively.

Kimberly Guilfoyle, a senior adviser to the Trump campaign who is also Donald Trump Jr.'s girlfriend, tested positive for COVID-19 before the event began and is now self-isolating.