Hospitals have reported a spike in infections from the Zika outbreak, with a number of hospitals in Florida reporting at least one patient infected.

Officials at St. Thomas More Medical Center in Tampa, Florida, told CNN that they were seeing more patients coming in with Zika-related complications, including fever and chills.

More from GlobalPost: A look at the Zika pandemic in picturesA hospital in Dallas, Texas, was seeing an increase in new patients, said the hospital’s chief medical officer.

The hospital said that about 300 patients had tested positive for Zika.

It said that all of those patients were being treated at a hospital in the United States.

The Associated Press reported that at least six Texas hospitals were reporting at or near 100 new infections.

At least three of those infections were linked to the virus.

At least four of those states have already seen significant increases in infections. 

According to the Centers for Disease Control and Prevention, about 40 million people worldwide are infected with the virus, and most are in the Americas and Europe.

The World Health Organization said last week that about 80 percent of infections in Latin America and the Caribbean are linked to Zika.