The novel coronavirus outbreak, which began in Wuhan, China, in December, has expanded to touch nearly every corner of the globe. Hundreds of thousands of people around the world have been sickened and thousands of others have died.The World Health Organization has declared the virus a global health emergency and rated COVID-19's global risk of spread and impact as "very high," the most serious designation the organization gives.Here's a timeline of how the outbreak has unfolded so far:Dec. 31, 2019: WHO says mysterious pneumonia sickening dozens in ChinaHealth authorities in China confirm that dozens of people in Wuhan, China, are being treated for pneumonia from an unknown source. Many of those sickened had visited a live animal market in Wuhan, but authorities say there is no evidence of the virus spreading from person to person.MORE: How novel coronavirus compares to SARS, MERS and other recent viral outbreaksJan. 11, 2020: China reports 1st novel coronavirus deathChinese state media reports the first death from novel coronavirus, a 61-year-old man who had visited the live animal market in Wuhan.Jan. 21, 2020: 1st confirmed case in the United StatesA man in his 30s from Washington state, who traveled to Wuhan, is diagnosed with novel coronavirus. Japan, South Korea and Thailand also report their first cases one day prior.A resident wears a protective mask as she walk on an empty business street, Feb. 13, 2020, in Wuhan, China.A resident wears a protective mask as she walk on an empty business street, Feb. 13, 2020, in Wuhan, China. Getty Images, FILEJan. 23, 2020: China imposes strict lockdown in WuhanChina imposes aggressive containment measures in Wuhan, the epicenter of the outbreak, suspending flights and trains and shutting down subways, buses and ferries in an attempt to stem the spread of the virus.MORE: What to do if you think you have coronavirus symptomsJan. 30, 2020: WHO declares global health emergencyFor the sixth time in history, the World Health Organization declares a "public health emergency of international concern," a designation reserved for extraordinary events that threaten to spread internationally.A bus arrives near the cruise ship Diamond Princess, where dozens of passengers were tested positive for coronavirus, at Daikoku Pier Cruise Terminal in Yokohama, Japan, Feb. 16, 2020.A bus arrives near the cruise ship Diamond Princess, where dozens of passengers were tested positive for coronavirus, at Daikoku Pier Cruise Terminal in Yokohama, Japan, Feb. 16, 2020. Athit Perawongmetha/Reuters, FILEFeb. 5, 2020: Diamond Princess cruise ship quarantinedMore than 3,600 passengers are quarantined on a cruise ship off the coast of Yokohama, Japan, while passengers and crew undergo health screenings. The number of confirmed cases on board the ship would eventually swell to more than 700, making it one of the largest outbreaks outside of China.World Health Organization (WHO) Director-General Tedros Adhanom Ghebreyesus attends a daily press briefing on the new coronavirus dubbed COVID-19, at the WHO headquaters, March 2, 2020, in Geneva.World Health Organization (WHO) Director-General Tedros Adhanom Ghebreyesus attends a daily press briefing on the new coronavirus dubbed COVID-19, at the WHO headquaters, March 2, 2020, in Geneva. Fabrice Coffrini/AFP via Getty ImagesFeb. 11, 2020: Novel coronavirus renamed COVID-19The WHO announces that novel coronavirus' formal new name is COVID-19. "Co" stands for coronavirus, "Vi" is for virus and "D" is for disease. Health officials purposely avoid naming COVID-19 after a geographical location, animal or group of people, so as not to stigmatize people or places.Feb. 26, 2020: 1st case of suspected local transmission in United StatesThe Centers for Disease Control and Prevention (CDC) confirms the first case of COVID-19 in a patient in California with no travel history to an outbreak area nor contact with anyone diagnosed with the virus. It's suspected to be the first instance of local transmission in the United States. Oregon, Washington and New York soon report their own cases of possible community transmission.MORE: Simple answers to common questions about coronavirusMedics transport a person on a stretcher into an ambulance at the Life Care Center of Kirkland, a long-term care facility linked to several confirmed coronavirus cases, in Kirkland, Washington, March 3, 2020.Medics transport a person on a stretcher into an ambulance at the Life Care Center of Kirkland, a long-term care facility linked to several confirmed coronavirus cases, in Kirkland, Washington, March 3, 2020. David Ryder/ReutersFeb. 29, 2020: 1st death reported in United StatesThe first COVID-19 death is reported in Washington state, after a man with no travel history to China dies on Feb. 28 at Evergreen Health Medical Center in Kirkland, Washington.Two deaths that occurred Feb. 26 at a nearby nursing home would later be recorded as the first COVID-19 deaths to occur in the United States. Later still, a death in Santa Clara, California, on Feb. 6 would be deemed the country's first COVID-19 fatality after an April autopsy.A researcher works in a lab that is developing testing for the COVID-19 coronavirus at Hackensack Meridian Health Center for Discovery and Innovation, Feb. 28, 2020, in Nutley, New Jersey.A researcher works in a lab that is developing testing for the COVID-19 coronavirus at Hackensack Meridian Health Center for Discovery and Innovation, Feb. 28, 2020, in Nutley, New Jersey. Kena Betancur/Getty Images, FILEMarch 3, 2020: CDC lifts restrictions for virus testingThe CDC issues new guidance that allows anyone to be tested for the virus without restriction. Previously, only those who had traveled to an outbreak area, who had close contact with people diagnosed with COVID-19, or those with severe symptoms, could get tested.Editor's PicksAmericans hoarding hand sanitizer, face masks and oat milk amid coronavirus fearsFamilies of residents at Washington nursing home hit by coronavirus want answersCoronavirus symptoms: Answers to your COVID-19 questionsMarch 13, 2020: Trump declares national emergencyPresident Donald Trump declares a U.S. national emergency, which he says will open up $50 billion in federal funding to fight COVID-19.March 15, 2020: CDC warns against large gatheringsThe CDC warns against holding or attending gatherings larger than 50 people, including conferences, festivals, parades, concerts, sporting events and weddings for eight weeks, recommending that individuals cancel or postpone those events to avoid spreading the virus or introducing it into new communities.March 17, 2020: Coronavirus now present in all 50 statesWest Virginia reports its first COVID-19 case, meaning the disease is present in all 50 states.MORE: Coronavirus map: Tracking the spread in the US and around the worldMarch 17, 2020: Northern Californians ordered to 'shelter in place'Six countries in the San Francisco area ordered to "shelter in place" for three weeks, meaning residents are required to remain at home unless they are leaving the house for an essential reason, or are exercising outdoors.March 18, 2020: China reports no new local infectionsChina reports no new domestic infections in the country for the first time since the outbreak began. If the trend holds for 14 days, it could be a sign that China's outbreak is ending. The country is still seeing travel-related COVID-19 cases and it remains to be seen whether China will be able to prevent a second wave of infection, once the government's strict lockdown measures are lifted.March 19, 2020: Italy's death toll surpasses China'sItaly's death toll tops 4,000, making it the first country to report more overall deaths than China, despite its much smaller population. The following week, COVID-19 deaths in Spain would similarly eclipse deaths in China.The usually busy Grand Central Station is seen nearly empty on March 25, 2020 in New York City.The usually busy Grand Central Station is seen nearly empty on March 25, 2020 in New York City. Angela Weiss/AFP via Getty ImagesMarch 20, 2020: New York City declared US outbreak epicenterNew York City state reports that more than 15,000 people have tested positive for COVID-19 and account for roughly half of the infections in the country. The vast majority of New Yorkers with COVID-19 are in the New York City region, which Mayor Bill de Blasio calls the "the epicenter of this crisis," warning that the outbreak will get worse as supplies dwindle.The Tokyo 2020 Olympic Rings, March 25, 2020 in Tokyo, Japan.The Tokyo 2020 Olympic Rings, March 25, 2020 in Tokyo, Japan. Carl Court/Getty ImagesMarch 24, 2020: Japan postpones OlympicsJapan postpones the 2020 Summer Olympics, which were originally slated to be held in Tokyo starting July 24, until summer 2021. Countries including Canada and Australia had already announced that given the public health risk of the COVID-19 pandemic, they would not be sending their athletes to the Games.An Indian policeman, left, and a civil defense person, 2nd left, make three men perform sit ups while holding their ear lobes, as a punishment for stepping out without a valid reason during a lockdown in Ahmedabad, India, March 24, 2020.An Indian policeman, left, and a civil defense person, 2nd left, make three men perform sit ups while holding their ear lobes, as a punishment for stepping out without a valid reason during a lockdown in Ahmedabad, India, March 24, 2020. Ajit Solanki/APMarch 24, 2020: India announces 21-day complete lockdownIndian Prime Minister Narendra Modi announces a total ban on the country's 1.3 billion citizens leaving their homes for 21 days, in order to stop the spread of COVID-19.March 26, 2020: United States leads the world in COVID-19 casesThe United States now has more confirmed coronavirus cases than any other country in the world, with cases topping 82,000 and deaths topping 1,000.March 27, 2020: Trump signs $2 trillion stimulus billPresident Donald Trump signs a $2 trillion coronavirus relief bill into law. The law guarantees loans to small businesses and creates a lending system for distressed companies. It also provides financial aid to hospitals on the frontlines of the crisis.British Prime Minister Boris Johnson gives his daily COVID 19 press briefing at Downing Street on March 22, 2020 in London.British Prime Minister Boris Johnson gives his daily COVID 19 press briefing at Downing Street on March 22, 2020 in London. Ian Vogler/Getty Images, FILEMarch 27, 2020: UK Prime Minister Boris Johnson tests positiveBoris Johnson, the prime minister of the United Kingdom, tests positive for COVID-19 after having a high fever and persistent cough. Johnson will continue to lead the government via video conferences.April 2, 2020: Global cases hit 1 millionMore than 1 million people around the world have been diagnosed with COVID-19. Given testing shortages, undiagnosed cases and suspicions about governments obscuring the scope of their respective outbreaks, the actual number of people sickened is believed to be much higher.April 4, 2020: New York sets single-day record for new COVID-19 cases New York State logs a record 12,000 new COVID-19 cases in a single day.April 9, 2020: Evidence that first COVID-19 cases in NYC came from EuropeA new study finds evidence that the first COVID-19 cases in New York City originated in Europe and occurred as early as February. Researchers traced the origin of New York City's outbreak and found it was primarily linked to untracked transmission between the U.S. and Europe, with limited evidence showing direct introductions from China or other countries in Asia.April 21, 2020: Autopsy revels 1st US COVID-19 death was earlier than previously thoughtThe CDC confirms that tissue from an individual in Santa County, California, who died Feb. 6 tested positive for COVID-19 . That death occurred weeks earlier than the COVID-19 deaths in the Seattle area on Feb. 26 that were previously believed to be the nation's first.May 27, 2020: US reaches 100,000 deathsThe pandemic has now killed more than 355,000 people worldwide and more than 100,000 people in the United States.A portrait of George Floyd held by a participant taking the Manhattan inbound roadway at the march across the Brooklyn Bridge on July 25, 2020.A portrait of George Floyd held by a participant taking the Manhattan inbound roadway at the march across the Brooklyn Bridge on July 25, 2020. Erik Mcgregor/LightRocket via Getty ImagesMay 31, 2020: George Floyd's killing spurs mass protestsAfter video surfaces of a Minneapolis police officer kneeling on a black man's neck for nearly nine minutes, ultimately killing him, protests against police brutality and systemic racism erupt across the country. Public health experts initially worry that the large-scale protests will spark an increase in COVID-19 cases, but the protests are never linked to such a spike.MORE: Police reformers push for de-escalation training, but the jury is out on its effectivenessJune 11-17, 2020: Cases in Arizona, South Carolina and Florida soar States that rushed to reopen their economies saw subsequent rises in COVID-19 cases, hospitalizations and deaths.June 24, 2020: NY, NJ, Conn., require 14-day quarantine for travelers from Florida As the United States' outbreak shifts from the Northeast to the South and West, several states put restrictions on travelers from Florida.June 30, 2020: EU says it will reopen borders to 14 countries, but not the USThe European Union announces that it will lift restrictions on travelers from 14 nations. Because of rising coronavirus cases in the United States, the U.S. is not included on the list of approved countries.July 7, 2020: US submits formal notice that it will withdraw from the WHOThe United States notifies the World Health organization that it is dropping out of the global health collective. The departure will go into effect in July 2021.Brazil's President Jair Bolsonaro who is infected with COVID-19, wears a protective face mask as he waves to supporters during a Brazilian flag retreat ceremony outside his official residence the Alvorada Palace, in Brasilia, Brazil, Monday, July 20, 2020.Brazil's President Jair Bolsonaro who is infected with COVID-19, wears a protective face mask as he waves to supporters during a Brazilian flag retreat ceremony outside his official residence the Alvorada Palace, in Brasilia, Brazil, Monday, July 20, 2020. Eraldo Peres/AP PhotoMORE: The East Coast heat wave isn't helping COVID-19 effortsJuly 7, 2020: Brazilian President Jair Bolsonaro tests positiveJair Bolsonaro, the president of Brazil, announces that he tested positive for COVID-19. Prior to falling ill, Bolsonaro had described COVID-19 as a "little cold" and attended several public events without a mask.Donald Trump wears a mask as he visits Walter Reed National Military Medical Center in Bethesda, Maryland on July 11, 2020.Donald Trump wears a mask as he visits Walter Reed National Military Medical Center in Bethesda, Maryland on July 11, 2020. Alex Edelman/AFP via Getty ImagesJuly 11, 2020: Trump wears a mask in public for the first time President Donald Trump wears a mask in public for the first time throughout the the pandemic, during a visit to a military hospital.Bar patrons attend the reopen Florida "maskless" rally and dinner held at 33 & Melt restaurant to protest mandatory face mask restrictions during the coronavirus pandemic in Windermere, Fla., July 11, 2020.Bar patrons attend the reopen Florida "maskless" rally and dinner held at 33 & Melt restaurant to protest mandatory face mask restrictions during the coronavirus pandemic in Windermere, Fla., July 11, 2020. Octavio Jones/ReutersMORE: Too little too late: The story of how Florida shattered the country's single-day COVID recordJuly 12, 2020: Florida breaks single-day record for new COVID-19 casesFlorida logs 15,000 new COVID-19 cases in a single day, surpassing New York's one-day record of 12,000 in April.July 26, 2020: Florida surpasses New York in total coronavirus cases Florida's 423,855 known COVID-19 cases now exceed cases in New York state, the early epicenter of the nation's outbreak.What to know about the coronavirus:How it started and how to protect yourself: Coronavirus explained What to do if you have symptoms: Coronavirus symptoms Tracking the spread in the U.S. and worldwide: Coronavirus map Tune into ABC at 1 p.m. ET and ABC News Live at 4 p.m. ET every weekday for special coverage of the novel coronavirus with the full ABC News team, including the latest news, context and analysis.
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Source : abcnews.go.com