These 15 states have either paused reopening plans or delayed any further action: Arkansas, Connecticut, Delaware, Idaho, Indiana, Kansas, Louisiana, Mississippi, Nevada, New Jersey, New Mexico, North Carolina, Utah, Washington and Wyoming.

New Jersey, for example, started reopening on May 18.

But on June 29, Gov. Phil Murphy said after seeing a surge in cases in other states, he would postpone reopening indoor dining indefinitely.

Then on July 7, Murphy said New Jersey would remain in phase two until further notice, explaining, "we’re not gonna be jumping the gun."

Beyond those 21 states, two states -- Maine and Virginia -- as well as major cities like New York City and Philadelphia, have postponed some aspect of reopening, such as indoor dining.

2:15 p.m.: NJ, PA report cases linked to Myrtle Beach trips

Officials in New Jersey and Pennsylvania are reporting coronavirus cases in their states linked to trips to Myrtle Beach, South Carolina, reported ABC Philadelphia station WPVI.

Bucks County and New Jersey officials linking COVID-19 spike to travel to Myrtle Beach, South Carolina

PHILADELPHIA (WPVI) -- Leaders in Bucks County and New Jersey are linking Myrtle Beach, South Carolina to a recent spike of positive cases in their areas.

The city is a popular beach destination and is usually crowded with vacationers during this time of year.

Bucks County Health Department Director Dr. David Damsker said 50 of the 103 recent new cases are people who traveled out-of-state, many returning from Myrtle Beach.

"Think twice before you leave for any area of the country that is currently experiencing a high prevalence of COVID-19," Damsker said.

New Jersey Gov. Phil Murphy said the state is also seeing a "small spike," mostly in part due to people coming back with the virus after attending a wedding in Myrtle Beach.

"We need to be smarter and we need to work harder. Our 14-day self-quarantine advisory for those who have come from a known coronavirus hotspot is there for a reason, to prevent flare-ups like the ones we are now seeing," Murphy said.