"Markets will remain highly volatile as long as they feel that they only have an incomplete picture of what is going on, and what is going to happen next", said Agathe Demarais, global forecasting director at the Economist Intelligence Unit.
Physicians diagnosed a man, a Chicago resident in his 60s, with a confirmed case of the virus and said the illness spread from his wife, the second known confirmed case in the U.S. The woman, also in her 60s, had returned from the virus' point of origin in Wuhan, China, on January 13, and was later diagnosed with novel coronavirus.
Nearly all the deaths so far have been in the central province of Hubei, home to about 60 million people and now under virtual lockdown.
On Thursday, the World Health Organization declared the outbreak that has spread to more than a dozen countries as a global emergency. World Health Organization is expected to make an announcement at 1:30 p.m. ET.
This decision now sets into motion a chain reaction to help countries build capacity to screen, identify and report cases as novel coronavirus spreads.
The patient surnamed Zhang is being treated in a designated hospital, with stable vital signs.
Medical staff in protective suits treat a patient with pneumonia caused by the new coronavirus at the Zhongnan Hospital of Wuhan University in Wuhan, Hubei province, China.
The average incubation period - from infection until symptoms show up - is about five days, the New England Journal study says.
Two of Wednesday's returnees initially refused to be tested for the virus, although officials said the pair were now willing to be checked.
But as far as the coronavirus in China is concerned, that ship may have already sailed.
Camila Cabello wears Versace at the 2020 Grammy Awards Red Carpet
Singing the daddy/daughter song directly to her father, Alejandro Cabello , in the front row of the crowd. Cabello's dad was visibly emotional during the performance, crying and hugging his daughter at the end.
As foreign countries evacuated their citizens from Wuhan, the locked-down city in which the virus was first detected, concern over the economic impact has steadily intensified.
Australia plans to house any citizens it evacuates from the city on an island normally used to detain asylum seekers.
On Wednesday, Canada's chief public health officer said it would take at least a year before a vaccine was developed to protect people against the new coronavirus spreading around the globe.
Up to four planned South Korean evacuation flights to Wuhan are expected to begin later on Thursday.
The CDC has taken several steps to curb the spread of coronavirus in the U.S. They've added "enhanced" health screenings at 20 global airports, and anyone coming from China is given a pamphlet on how to identify symptoms of coronavirus upon arrival in the U.S.
"This is a very serious health situation. moving forward we can expect to see more cases".
"We want to move forward and be aggressive, but we want our actions to be evidence-based and appropriate to the current circumstance", she said. The vast majority of Americans have not had recent travel to china, the high-risk areas of transmission where sustained human to human transmission is occurring.
Major airlines that have suspended or reduced their services to China include British Airways, German flag carrier Lufthansa, American Airlines, KLM, and United Airlines. Russian Federation will also limit its railway links with China from Friday, leaving only direct trains between Moscow and Beijing.
As the Chinese city at the heart of the coronavirus outbreak remains under lockdown, governments overseas are continuing efforts to bring their citizens home. Starbucks coffee shops require temperature checks and masks.