Several state leaders have rolled back public health restrictions.

As states begin to relax restrictions imposed earlier during the COVID-19 pandemic, emboldened by improved vaccine circulation and distribution and waning new cases, experts warn this could reverse the progress the country has made so far.

Looking at a data analysis conducted by ABC News, several states, including Alaska, Connecticut, Delaware, Idaho, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Nevada, New Hampshire, New Jersey, Oregon and West Virginia, are experiencing increases in new infections by at least 10 percent. 

The analysis was derived from data from the U.S. Centers for Disease Control and Prevention (CDC). 

Some of the aforementioned saw increases in new case numbers by 25 percent over last week. 

Confidence inspired by increased vaccinations could be one driving force behind these jumps in new infections, as well as recent revocations of mask mandates and restrictions on indoor gatherings. 

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