New York, New Jersey and Connecticut added three states to their 14-day quarantine rule, bringing the total to 19 states.

The travel advisory—which now includes Delaware, Kansas and Oklahoma—applies to any person arriving from a state with a positive test rate higher than 10 per 100,000 residents or a state with a 10% or higher positivity rate, each over a 7-day rolling average.

New Jersey Governor Phil Murphy said several recent outbreaks in his state “are directly tied to travel from Covid-19 hot spots.”

The full list of states subject to the New York-New Jersey-Connecticut advisory is: Alabama, Arkansas, Arizona, California, Delaware, Florida, Georgia, Iowa, Idaho, Kansas, Louisiana, Mississippi, North Carolina, Nevada, Oklahoma, South Carolina, Tennessee, Texas and Utah.

“New Yorkers did the impossible—we went from the worst infection rate in the United States to one of the best—and the last thing we need is to see another spike of Covid-19” Governor Andrew Cuomo said Tuesday in a statement.

New York, initially the epicenter of the U.S outbreak, reported an additional 588 cases on July 6, an increase of 1%, for a total of 398,237. After a lockdown, Cuomo began to reopen New York in regions and in phases. Murphy is reopening statewide in phases.

Cuomo has referred to the quarantine as a requirement subject to fines, while Murphy has referred to it as an advisory.

This article was provided by Bloomberg News.