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When covid-19 was reported for the first time by the World Health Organization (WHO), perhaps nobody imagined that, a few months later, the disease would have led to the closure of borders, to the confinement of the population, infected to nearly 80 million people and 1.7 million killed around the world, almost a year after the first case was reported.
How and when did the coronavirus start?
How has the virus that has the world on alert spread?
Coronaviruses are a large group of viruses common among animals that can affect people, usually with mild or moderate upper respiratory illness, similar to the common cold.
Symptoms of the coronavirus can include a runny nose, cough, sore throat, headache, fever, conjunvitis, digestive problems, and loss of smell and taste.
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See here a timeline of how covid-19 started and how it has spread.
December 31, 2019
The first cases of pneumonia detected in Wuhan are reported to the WHO.
During this period, the virus is still unknown.
The cases occur between December 12 and 29, according to Wuhan health authorities.
During this reported period, the virus was unknown.
The cases occur between December 12 and 29, according to the Wuhan Department of Health.
January 1, 2020
China's health authorities are closing the Huanan Seafood Wholesale Market, after it was discovered that wild animals sold there may be the source of the virus.
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January 5, 2020
China announces that the unknown cases of pneumonia in Wuhan do not correspond to SARS or MERS.
In a statement, the Wuhan Municipal Health Commission says a retrospective investigation into the outbreak has been launched.
January 7, 2020
Chinese authorities confirm that they have identified the virus as a new coronavirus, initially named 2019-nCoV by the WHO.
January 11, 2020
The Wuhan Municipal Health Commission announces the first death caused by the coronavirus.
A 61-year-old man, exposed to the virus in the seafood market, died on January 9 after respiratory failure from severe pneumonia.
January 12, 2020
China Shares Coronavirus Genetic Sequence for Countries to Develop Diagnostic Kits
(AP Photo / Ahn Young-joon)
January 13, 2020
Thai authorities report a case of coronavirus infection.
The infected man is a Chinese citizen who had arrived from Wuhan.
January 16, 2020
In Japan, authorities confirm that a Japanese man who traveled to Wuhan is infected with the virus.
January 17, 2020
Chinese health officials confirm that a second person died in the country.
The United States responds to the outbreak by implementing symptom screenings at San Francisco, New York and Los Angeles airports.
Scientist doubts that the coronavirus came out of a laboratory 2:34
January 19, 2020
Cases are reported in Beijing and Shenzhen, China.
January 20, 2020
China reports 139 new cases of the disease, including the death of a third person.
On the same day, the first WHO situation report confirmed cases in Japan, South Korea and Thailand.
In addition, the National Institutes of Health (NIH, for its acronym in English) announce that they are working on a vaccine against the coronavirus.
"NIH is in the process of taking the first steps toward developing a vaccine," said Dr. Anthony Fauci, director of the National Institutes of Allergy and Infectious Diseases.
Jan 21, 2020
Officials in Washington state confirm the first case of coronavirus in the United States.
January 22, 2020
Wuhan announces that it will "temporarily" close its airports and railway stations for passengers leaving the city, following news that the death toll from the Wuhan coronavirus has risen to 17. Chinese authorities confirm at least 547 cases In the continent.
January 23, 2020
In an emergency committee convened by the WHO, the entity ensures that the Wuhan coronavirus does not yet constitute an international public health emergency.
Travel restrictions are also imposed on neighboring Wuhan cities, impacting millions of people.
The Beijing Bureau of Culture and Tourism cancels all large-scale Lunar New Year celebrations in an effort to contain the growing spread of the Wuhan coronavirus.
Jan 24, 2020
The first cases of coronavirus are reported in Europe.
They were in France.
January 25, 2020
The number of cases in the world exceeds 1,000.
A total of 1,287 cases are registered.
Jan 26, 2020
More than 2,700 confirmed cases in China and 50 in other parts of the world.
There are 80 dead, all in China.
The China Association of Travel Services advises that all tours, including international ones, will be suspended.
January 27, 2020
More than 100 people have died in China from the coronavirus
January 28, 2020
Chinese President Xi Jinping meets with WHO Director-General Tedros Adhanom in Beijing.
At the meeting, Xi and the WHO agree to send a team of international experts, including personnel from the US Centers for Disease Control and Prevention (CDC), to China to investigate the coronavirus outbreak. .
A US State Department plane evacuates diplomats and their families from Wuhan.
January 29, 2020
The White House announces the creation of a new task force that will help monitor and contain the spread of the virus and will ensure that Americans have accurate and up-to-date health and travel information.
Wuhan: residents with possible coronavirus symptoms ask for help 4:21
January 30, 2020
The United States confirms the first contagion of the coronavirus transmitted from person to person.
Coronavirus cases rise to more than 9,600, as well as the number of deaths to 170. There are more than 100 cases in 20 places outside of China.
The World Health Organization declares the coronavirus an international public health emergency.
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January 31, 2020
The Donald Trump administration announces that it will deny entry to foreigners who have traveled to China in the past 14 days.
February 2, 2020
A man dies in the Philippines from the coronavirus.
It is the first time a death has been reported outside mainland China since the disease outbreak began.
February 3, 2020
China's Foreign Ministry accuses the US government of reacting inappropriately to the coronavirus outbreak and spreading fear by imposing travel restrictions.
February 4, 2020
Japan's Ministry of Health announces that 10 people aboard the Diamond Princess cruise ship, docked in Yokohama Bay, have confirmed cases of coronavirus.
The vessel, which carries more than 3,700 people, is placed in quarantine scheduled to end on February 19.
February 5, 2020
The global death toll from coronavirus exceeds 500 people.
February 6, 2020
The first death from coronavirus in the United States is recorded: A person in Santa Clara County of California dies of coronavirus, but the link is not confirmed until April 21.
February 7, 2020
Li Wenliang, the Wuhan doctor who was targeted by police for trying to alert about a virus "similar to SARS" in December 2019, has died of the coronavirus.
Following news of Li's death, the messages "The Wuhan government owes Dr. Li Wenliang an apology" and "We want freedom of expression" were trending on Weibo, China's Twitter-like platform Weibo, before disappear from the heavily censored platform.
One of the first doctors who warned about the coronavirus 3:13 dies
February 8, 2020
The US embassy in Beijing confirms that a 60-year-old US citizen died in Wuhan on February 6, the first confirmed death of a foreigner.
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February 10, 2020
President Xi inspects efforts to contain the Wuhan coronavirus in Beijing.
It is the first time that the president appears on the front lines of the fight against the outbreak.
On the same day, a team of international experts from WHO arrives in China to help contain the transmission of the virus.
The coronavirus has claimed the lives of 1,000 people around the world, the vast majority in mainland China.
Royal Caribbean's cruise ship The Anthem of the Seas sets sail from Bayonne, NJ, after coronavirus suspicions kept it docked and passengers waited for days.
February 11, 2020
The WHO names the coronavirus as covid-19.
February 13, 2020
China's state-run Xinhua News Agency announces that Shanghai Mayor Ying Yong will replace Jiang Chaoliang amid the outbreak.
The head of the Wuhan Communist Party, Ma Guoqiang, was also replaced by Wang Zhonglin, party head of Jinan City in Shandong Province, according to Xinhua.
February 14, 2020
A Chinese tourist who was diagnosed with the virus dies in France, becoming the first person to die from the outbreak in Europe.
The death toll from the coronavirus stands at 1,500.
In addition, Egypt announces its first case of the Wuhan coronavirus, according to a joint statement from the Egyptian Ministry of Health and the WHO.
It is the first confirmed case is the first in Africa since the virus was detected.
(Credit: VALERY HACHE / AFP via Getty Images)
February 15, 2020
The official Communist Party daily
Qiushi
publishes the transcript of a speech delivered on February 3 by President Xi in which he "issued requirements for the prevention and control of the new coronavirus" from January 7, revealing that Xi knew and was directing the response to the virus nearly two weeks before he publicly commented on it.
February 17, 2020
A second person in California's Santa Clara County dies of coronavirus, but the link isn't confirmed until April 21.
February 18, 2020
People who have died from coronavirus exceed 2,000 cases.
Xi says in a phone call with Britain's Prime Minister Boris Johnson that China's measures to prevent and control the epidemic "are making visible progress," according to state news Xinhua.
February 21, 2020
The CDC changes the criteria for counting confirmed cases of novel coronaviruses in the United States and begins to track two distinct groups: those repatriated by the US Department of State and those identified by the US public health network.
February 25, 2020
The NIH announces that a clinical trial to evaluate the safety and effectiveness of the antiviral drug remdesivir in adults diagnosed with coronavirus has been initiated at the University of Nebraska Medical Center in Omaha.
The first participant is an American who was evacuated from the Diamond Princess cruise ship docked in Japan.
In an effort to contain the largest outbreak in Europe, Italy's Lombardy region press office issues a list of cities and towns that are in complete lockdown.
Around 100,000 people are affected by the travel restrictions.
The restrictions could affect Italy's already fragile economy.
(Credit: Piero Cruciatti / AFP / Getty Images)
February 26, 2020
CDC officials say a California patient being treated for a new coronavirus is the first case of unknown origin in the United States.
The patient, who had no relevant travel history or exposure to another known patient, is the first possible case of "community spread" in the United States.
President Trump puts Vice President Mike Pence in charge of the US government's response to the novel coronavirus, amid mounting criticism of the White House's handling of the outbreak.
February 29, 2020
A state health official announces that a patient infected with the new coronavirus in Washington state has died, which is considered the first death due to the virus in the United States.
Autopsy results later reveal that two Californians died of the new coronavirus in early and mid-February, up to three weeks earlier.
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March 3, 2020
The Federal Reserve cuts interest rates by half a percentage point in an attempt to shake the US economy on concerns about the coronavirus outbreak.
It's the first unscheduled emergency rate cut since 2008, and it also marks the biggest one-time cut since then.
Officials announce that Iran will temporarily release 54,000 people from prisons and deploy hundreds of thousands of healthcare workers as officials announced a series of measures to contain the world's deadliest coronavirus outbreak outside of China.
It was also announced that 23 members of Iran's parliament tested positive for the virus.
March 4, 2020
The CDC formally removes previous restrictions that limited coronavirus testing to general people to those in the hospital, unless they had close contact with confirmed coronavirus cases.
According to the CDC, physicians should now "use their judgment to determine whether a patient has signs and symptoms consistent with COVID-19 and whether the patient should be tested."
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March 8, 2020
Italy's Prime Minister Giuseppe Conte signs a decree establishing travel restrictions throughout the Lombardy region and 14 other provinces, restricting the movements of more than 10 million people in the northern part of the country.
March 9, 2020
Conte announces that the entire country of Italy is under lockdown.
Italy sends the army to monitor quarantine for covid-19 0:44
March 11, 2020
WHO declares the new coronavirus outbreak to be a pandemic.
WHO says the outbreak is the first pandemic to be caused by a coronavirus.
In an Oval Office address, Trump announces that he will restrict travel from Europe to the United States for 30 days in an attempt to slow the spread of the coronavirus.
The ban, which applies to all 26 Schengen Area countries, applies only to foreign nationals and not to US citizens and permanent residents who would be screened before entering the country.
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March 13, 2020
Trump declares a national emergency to free up $ 50 billion in federal resources to fight the coronavirus.
March 18, 2020
Trump enacts a coronavirus relief package that includes provisions for free covid-19 testing and paid emergency leave.
March 19, 2020
At a press conference, officials from China's National Health Commission report that there are no new cases of coronavirus transmitted locally for the first time since the pandemic began.
March 23, 2020
The Secretary General of the United Nations, António Guterres, calls for an immediate global ceasefire amid the pandemic to fight against "the common enemy."
March 24, 2020
Japan's Prime Minister Shinzo Abe and International Olympic Committee (IOC) President Thomas Bach agree to postpone the Olympics until 2021 amid the outbreak.
March 25, 2020
Leaders of the White House and Senate reach an agreement on a US $ 2 trillion stimulus agreement to offset the economic damage of the coronavirus, producing one of the most expensive and far-reaching measures in the history of Congress.
March 27, 2020
Trump signs the stimulus package into law.
April 2, 2020
According to the Department of Labor, 6.6 million American workers file for their first week of unemployment benefits in the week ending March 28, the most initial claims in history.
Globally, the total number of coronavirus cases exceeds one million, according to the Johns Hopkins University tally.
US unemployment rate increased to 14.7% 1:15
April 3, 2020
Trump says his administration now recommends that Americans wear "non-medical cloth" face coverings, a reversal of previous guidance that suggested masks were unnecessary for people who weren't sick.
April 8, 2020
China reopens Wuhan after a 76-day lockdown.
CNN returns to Wuhan: this found 1:10
April 14, 2020
Trump announces that he will suspend funding for the WHO pending a review, saying the review will cover the “role of the WHO in severe mismanagement and covering up the spread of the coronavirus”.
April 20, 2020
Chilean health officials announce that Chile will begin issuing the world's first digital immunity cards to people who have recovered from the coronavirus, saying the cards will help identify people who no longer pose a risk to the health of the rest.
April 21, 2020
California's Santa Clara County announces autopsy results showing two Californians died of a new coronavirus in early and mid-February, up to three weeks before the first known death from the virus in the United States.
April 28, 2020
The United States exceeds one million confirmed cases of the virus, according to Johns Hopkins.
May 1, 2020
The US Food and Drug Administration (FDA) issues an emergency use authorization for remdesivir in hospitalized patients with severe COVID-19.
FDA Commissioner Stephen Hahn says remdesivir is the first licensed therapy drug for COVID-19.
The effectiveness of the drug remdesivir against covid-19 3:34
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May 4, 2020
During a virtual pledging conference jointly organized by the European Union, world leaders commit to a total of US $ 8 billion for the development and deployment of diagnostics, treatments and vaccines against the new coronavirus.
Credit: Sandra Montanez / Getty Images
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May 11, 2020
Trump and his administration announce that the federal government will send $ 11 billion to states to expand coronavirus testing capabilities.
The aid package signed on April 24 includes $ 25 billion for testing, with $ 11 billion for states, localities, territories and tribes.
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May 13, 2020
Dr. Mike Ryan, executive director of the WHO health emergencies program, warns that the coronavirus may never go away and that it will join the mix of viruses that kill people around the world each year.
May 19, 2020
The WHO agrees to conduct an investigation into the global response to the coronavirus pandemic.
WHO member states adopt the proposal without objection during the World Health Assembly meeting, after the European Union and Australia spearheaded calls for an investigation.
May 23, 2020
China does not report new cases of symptomatic coronavirus, the first time since the outbreak began in December.
May 27, 2020
Data collected by Johns Hopkins University reports that the coronavirus has killed more than 100,000 people in the United States.
That means an average of nearly 900 Americans have died each day since the first known coronavirus-related death was reported nearly four months earlier.
Pandemic