(CNN)Parts of the South are running out of oxygen supply as Covid-19 cases and hospitalizations continue soaring, primarily driven by the swaths of people who remain unvaccinated and a dangerous coronavirus variant that has been tirelessly infecting millions of Americans.

Several hospitals in Florida, South Carolina, Texas and Louisiana are struggling with oxygen scarcity. Some are at risk of having to use their reserve supply or running out of oxygen imminently, according to state health officials and hospital consultants.

With the continued uptick in Covid-19 cases, there has been more demand on the oxygen supply, and hospitals cannot keep up the pace to meet those needs, Donna Cross, who is the senior director of facilities and construction at Premier -- a health care performance improvement company -- told CNN.