Coronavirus updates: Hard-hit Wisconsin reports record high daily death toll
Hospitalizations have nearly tripled over the last month, the governor said.
A pandemic of the novel coronavirus has now killed more than 1 million people worldwide.
Over 37.9 million people across the globe have been diagnosed with COVID-19, the disease caused by the new respiratory virus, according to data compiled by the Center for Systems Science and Engineering at Johns Hopkins University. The criteria for diagnosis -- through clinical means or a lab test -- has varied from country-to-country. Still, the actual numbers are believed to be much higher due to testing shortages, many unreported cases and suspicions that some national governments are hiding or downplaying the scope of their outbreaks.
Since the first cases were detected in China in December, the virus has rapidly spread to every continent except Antarctica.
The United States is the worst-affected country, with more than 7.8 million diagnosed cases and at least 215,549 deaths.
California has the most cases of any U.S. state, with more than 858,000 people diagnosed, according to Johns Hopkins data. California is followed by Texas and Florida, with over 821,000 cases and over 738,000 cases, respectively.
More than 190 vaccine candidates for COVID-19 are being tracked by the World Health Organization, at least 10 of which are in crucial phase three studies. Of those 10 potential vaccines in late-stage trials, there are currently five that will be available in the United States if approved.
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Chinese city tests more than 3 million residents amid outbreak
The eastern Chinese port city of Qingdao has tested more than a third of its 9 million residents for COVID-19 since launching a citywide testing campaign amid the country's first reported domestic outbreak in months.
The Qingdao Municipal Health Commission said in a statement Tuesday that it had collected over 3 million samples for COVID-19 tests and that no new cases have been found among the more than 1.1 million results returned thus far. The entire city will be tested this week, the commission said.
A total of 12 cases of COVID-19 -- six with symptoms and six without -- have been recorded in Qingdao, since an outbreak linked to the city's Municipal Chest Hospital was discovered over the weekend, according to the commission.
The Chinese mainland, where the coronavirus pandemic began last December, has so far reported 85,591 confirmed cases of COVID-19 and 4,634 deaths. The country does not count asymptomatic infections as confirmed cases.
Italy introduces strict new nationwide measures
The Italian government imposed strict new measures nationwide on Tuesday in a bid to prevent further spread of the novel coronavirus.
Under the new rules, parties in public spaces and discos, both indoors and outdoors, are banned. Parties can be held in restaurants but with no more than 30 attendees. Bars, ice cream parlors, pastry shops and restaurants with table service must close by midnight, while those without must shutter by 9 p.m. Drinks can only be consumed while sitting at tables -- not while standing at the bar or outside -- after 9 p.m.
Also banned are school trips, guided tours and any contact sports not organized by an association that can maintain social distancing rules. Gyms, however, remain open.
The government's new measures are limited to "strong recommendations" against private gatherings and parties in homes with more than six people who don't share a household. There's also no obligation to wear a face mask inside a home but it's "strongly recommended" when guests are over.
Last week's nationwide mandate to wear masks outdoors remains in place.
The move comes as Italy, once the epicenter of the coronavirus pandemic, sees a sharp uptick in infections after gradually loosening restrictions during the spring and summer, following a nearly three-month lockdown that helped get its COVID-19 outbreak under control.
Earlier this month, the European country confirmed more than 5,000 new cases of COVID-19 in a single day for the first time since the peak of its outbreak in late March. On Monday, Italy's civil protection agency registered 4,619 new cases and 39 deaths, bringing the cumulative totals to 359,569 cases and 36,205 deaths.
ABC News' Clark Bentson and Phoebe Natanson contributed to this report.
Russia sees record rise in cases and deaths but 'no reason' for lockdown
Russia confirmed 13,868 new cases of COVID-19 and 244 deaths over the past 24 hours, setting new records for its daily tallies of both infections and fatalities.
It's the third straight day that Russia has registered over 13,000 new cases. The country's previous record of 13,634 new cases was set over the weekend. Meanwhile, the latest single-day death toll shatters the previous record of 232 deaths, which was set at the end of May.
The cumulative totals now stand at 1,312,310 confirmed cases and 22,727 deaths, according to Russia’s coronavirus response headquarters.
Russian authorities have said there's no immediate plan to impose a second nationwide lockdown, even as the country's outbreak grows after most coronavirus-related restrictions were lifted over the summer.
"In spite of the fact that we are seeing growing numbers, today in the Russian Federation we are not talking about blocking the economy, halting any activities, enterprises or any sectors of the economy because we see no reason for that today" Anna Popova, head of Russian consumer watchdog Rospotrebnazor, told reporters Tuesday.
But officials in Moscow, the epicenter of the country's COVID-19 outbreak, have recommended that the elderly self-isolate at home and also encouraged businesses to have at least one-third of their employees work from home. School holidays in the capital this month were extended from one to two weeks.
More than 33% of the newly confirmed cases -- 4,618 -- and nearly 24% of the newly reported deaths -- 58 -- were registered in the capital. Moscow Mayor Sergey Sobyanin has said that this week will be "largely decisive" in the fight against the city's outbreak.
ABC News' Alina Lobzina contributed to this report.
India records lowest daily tally of cases since August
India confirmed another 55,342 new cases of COVID-19 in the past 24 hours, it's lowest daily tally since mid-August.
An additional 706 coronavirus-related fatalities were also recorded. The country's cumulative totals now stand at 7,175,880 confirmed cases and 109,856 deaths, according to the latest data from the Indian Ministry of Health and Family Welfare.
India is only the second country in the world to surpass 7 million total cases, after the United States. Since hitting a peak of 97,894 new cases registered in a single day in September, India's average number of daily cases has steadily declined, falling to under 73,000 cases a day.
The vast country of nearly 1.4 billion people is still on track to become the pandemic's worst-hit nation within weeks, overtaking the United States, where more than 7.8 million people have been diagnosed with COVID-19.