That was the stark warning of top U.S. infectious disease expert Dr. Anthony Fauci in testimony to a Senate committee on Tuesday.

Dr. Anthony Fauci: “When you have an outbreak in one part of the country, even though in other parts of the country they’re doing well, they are vulnerable.

We are now having 40-plus thousand new cases a day.

Dr. Fauci’s warning came as eight states announced single-day highs, with a record 47,000 U.S. infections reported on Tuesday.

We’re seeing daily dramatic increase, almost a vertical slope, some of the models saying that we may be at 4,000 cases a day in Houston by early, middle July.