Travellers from 16 U.S. states must now observe 14-day quarantine if they are visiting New York.
Governor Andrew Cuomo announced this Tuesday amid surging coronavirus infection rates outside of the state.
Cuomo said visitors from California, Nevada, Georgia, Iowa, Idaho, Louisiana, Mississippi and Tennessee must now quarantine for if they travel to New York.
This expands a travel advisory he and the governors of New Jersey and Connecticut announced last week which related to virus hotspots Alabama, Arkansas, Arizona, Florida, South Carolina, North Carolina, Utah and Texas.
“We now have 16 states that meet the formula for quarantine,” Cuomo told local television news channel NY1.
The development comes as COVID-19 cases in New York — once the epicentre of the global pandemic, where more than 20,000 people have succumbed to the disease — trend downward while infection rates spike elsewhere.
The travel restrictions highlight a sharp turnaround in the nature of the coronavirus spread in the United States, where just months ago several states were mandating quarantine for visiting New Yorkers.
Cuomo has said the the advisory is aimed at keeping infection and hospitalisation rates in the New York area low as the region slowly re-opens businesses and activities.
He explained last week that any visitors found violating self-quarantine rules would be subject to a judicial order and self-funded mandatory quarantine, as well as potential fines of $2,000 for a first violation and $5,000 for a second.
Connecticut Governor Ned Lamont tweeted that his state had also expanded its list to 16 under the “regional travel advisory.”