Korean health authorities have confirmed the country’s first case of the new coronavirus that originated in Wuhan, China, issuing an infectious disease crisis alert in the country.

Korea Centers for Disease Control and Prevention (KCDC) had previously cleared a patient suspected of having been infected on the 11th after confirming the illness was unrelated to the Chinese coronavirus.

KCDC announced Monday that a 35-year old Chinese female who had entered into Incheon Airport from a plane from Wuhan, China was confirmed to have the Chinese coronavirus infection.

The Wuhan local reportedly showed signs of pneumonia that included cough and fever, upon which health authorities quarantined and tested the patient.

The patient said she suffered from fever, chills, and muscle pain starting Saturday, which was the day before she entered the country. The patient also reportedly told health authorities that she did not visit Wuhan seafood and traditional markets or come into contact with other confirmed coronavirus patients or animals.

Korea’s Central Epidemiologic Investigator said it is conducting an in-depth epidemiological investigation.

The confirmation marks the spread of the infection to several countries, including Thailand and Japan. Respective health agencies reported one case of the respiratory illness in Japan, and two cases in Thailand.

The infection has also spread to at least three cities in China. Health authorities have identified new cases in Wuhan, Beijing, and Shenzhen.

At least 200 people have been infected, and three have died from the new respiratory illness.