Wisconsin has now surpassed 200,000 COVID-19 cases. While it took Wisconsin a little over seven months to reach 100,000 cases, it took a fraction of that time -- just 36 days -- to reach 200,000, Gov. Tony Evers said.

With 5,262 new cases and 64 more deaths, Tuesday marked Wisconsin’s largest single-day increase for cases and fatalities, said Secretary-Designee Andrea Palm.

Hospitals across the state are strained and operating with critical and imminent staffing shortages, Palm said.

Evers urged residents to avoid gatherings and only leave their homes when absolutely necessary.

ABC News’ Rachel Katz contributed to this report.

New York City Mayor Bill de Blasio is urging New Yorkers to avoid traveling over Thanksgiving to keep high COVID-19 numbers from returning to the city.

“You could be putting your family and yourself in danger and bringing the disease back here," the mayor said, according to ABC New York station WABC. "Everyone is going to make their own decision, I know there are painful choices. I get it. But my recommendation is to avoid travel this holiday season. Stay safe, to keep us all safe.”

California has been added to New York’s growing travel advisory list, Gov. Andrew Cuomo said Tuesday.

Forty-five states and territories now meet the travel advisory requirements, Cuomo said. Those who come to New York must quarantine for two weeks if they travel from areas with positive test rates above 10 per 100,000 residents over a one-week average, or an area with a 10% or higher positivity rate over a one-week average.

These are the states and territories on the list: Alaska, Alabama, Arkansas, Arizona, California, Colorado, Delaware, Florida, Georgia, Guam, Iowa, Idaho, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maryland, Michigan, Minnesota, Missouri, Mississippi, Montana, North Carolina, North Dakota, Nebraska, New Mexico, Nevada, Ohio, Oklahoma, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Wisconsin, West Virginia and Wyoming.

Connecticut, New Jersey, Massachusetts and Pennsylvania meet the criteria for the travel advisory list, but Cuomo said it’s not practical to enforce a quarantine with neighboring states. New Yorkers are discouraged from nonessential travel to those states.

ABC News’ Josh Hoyos contributed to this report.

Greece reported 1,259 new COVID-19 cases on Tuesday, a record 24-hour increase, surpassing the 935 new infections reported on Saturday, according to the National Public Health Organization.

The small Mediterranean country now has over 32,000 cases.

Twelve new deaths were reported on Tuesday, pushing Greece's fatality total to 593.

Meanwhile, Italy on Tuesday also reported a record 24-hour increase -- 21,994 newly diagnosed cases -- breaking a record set on Sunday, according to the Civil Protection Agency.

Italy now has more than 564,000 cases and at least 37,700 fatalities.

Walter Ricciardi, a top Italian physician and adviser to Health Minister Roberto Speranza, called for Naples and Milan to be locked down on Tuesday, saying "in Milan and Naples you can get COVID by walking into a bar or a restaurant or catching a bus."

ABC News’ Christine Theodorou contributed to this report.

An ABC News analysis of COVID-19 trends across all 50 U.S. states as well as Washington, D.C., Puerto Rico and Guam found there were increases in the daily positivity rate of COVID-19 tests in 37 states.

The analysis also found increases in COVID-19 hospitalizations in 35 states plus Puerto Rico and Guam, as well as increases in daily COVID-19 death tolls in 27 states.

Meanwhile, case numbers are higher -- a daily average of at least 15 new cases per 100,000 people over the past week -- and staying high in 33 states plus Puerto Rico and Guam, and case numbers are lower -- a daily average of under 15 new cases per 100,000 people over the past week -- but are going up in nine states.

Six states hit a record number of current hospitalizations in a day, while 16 states saw a record number of current hospitalizations in a week. Twenty states plus Puerto Rico reported a record number of new cases in a week. Six states reached a record number of new deaths in a week.

The United States is rapidly approaching an average of 70,000 new cases a day, the highest it has been since the start of the pandemic. Just a week ago, the country was averaging 57,000 new cases a day. That average has doubled in the last six weeks. Friday and Saturday marked the two highest days on record for the country, with a combined 165,678 new cases over the 48-hour reporting period.

The month of October is now on track to become the second-highest month on record for COVID-19 cases in the United States. Nearly 1.4 million daily cases have been reported since Oct. 1, and nearly half a million of those cases have been reported in the last seven days alone.

Midwestern states continue to struggle, reaching record-high daily figures on Saturday. But the Midwest is not alone. Since Oct. 3, the seven-day average of new cases in the South have risen by 45%, and the West is now reporting daily case numbers not seen since mid-August.

Even the Northeast, which had consistently reported improving trends after COVID-19 struck in the spring, has seen a concerning resurgence of the virus. Rhode Island hit an all-time high of new cases last week, and the average rate of positivity has now surpassed 5% in Massachusetts.

The number of COVID-19 patients hospitalized nationwide continues to hover around 41,000. Just in the last month, current hospitalizations have increased by 40%.

In the Northeast, hospitalizations are nearing the 4,000 mark. The number of patients hospitalized in the Midwest is now the highest on record.

The trends were all analyzed from data collected and published by the COVID Tracking Project over the past two weeks, using the linear regression trend line of the seven-day moving average to examine whether a state's key indicators were increasing, decreasing or remained flat.

ABC News' Benjamin Bell, Brian Hartman, Soorin Kim and Arielle Mitropolous contributed to this report.