Information collected on the first 20 domestic cases (not including repatriated cases and Diamond Princess cruise ship evacuee cases) is presented in the table below:

Patients Under Investigation (PUI) in the United States

CDC in the early stages released information regarding the number of cases and people under investigation that was updated regularly on Mondays, Wednesdays, and Fridays. Below we provide the historical reports that we were able to gather in order to track the progression in the number of suspected cases and US states involved through time in the initial stages



As of Feb. 10:

Number of U.S. States with PUI 36 Positive 12 Negative 318 Pending

(specimens awaiting testing) 68 TOTAL 398

As of Feb. 7:

Number of U.S. States with PUI 36 Positive 12 Negative 225 Pending

(specimens awaiting testing) 100 TOTAL 337 As of Feb. 5: Number of U.S. States with PUI 36 Positive 11 Negative 206 Pending

(specimens awaiting testing) 76 TOTAL 293

As of Feb. 3:

Number of U.S. States with PUI 36 Positive 11 Negative 167 Pending

(specimens awaiting testing) 82 TOTAL 260

As of January 31:

Number of U.S. States with PUI 36 Positive 6 Negative 114 Pending

(specimens awaiting testing) 121 TOTAL 241

Previously, as of January 29, there were 92 suspected cases awaiting testing.

Number of U.S. States with PUI 36 Positive 5 Negative 68 Pending

(specimens awaiting testing) 92 TOTAL 165

Timeline of Events

On January 31, HHS declared Coronavirus a Public Health Emergency in the US

As of Jan. 31, the Wuhan coronavirus is officially a public health emergency in the United States, Alex Azar, secretary of the US Department of Health and Human Services (HHS), announced at a White House press briefing.

As of Jan. 31, the Wuhan coronavirus is officially a public health emergency in the United States, Alex Azar, secretary of the US Department of Health and Human Services (HHS), announced at a White House press briefing. On Jan. 31, the U.S. Centers for Disease Control and Prevention (CDC) issued a federal quarantine for 14 days affecting the 195 American evacuees from Wuhan, China. Starting Sunday, Feb. 2, U.S. citizens, permanent residents and immediate family who have visited China's Hubei province will undergo a mandatory 14 days quarantine and, if they have visited other parts of China, they would be screened at airports and asked to self-quarantine for 14 days. The last time the CDC had issued a quarantine was over 50 years ago in the 1960s, for smallpox.

On Jan. 31, the U.S. Centers for Disease Control and Prevention (CDC) affecting the 195 American evacuees from Wuhan, China. Starting Sunday, Feb. 2, U.S. citizens, permanent residents and immediate family who have visited China's Hubei province will undergo a and, if they have visited other parts of China, they would be screened at airports and asked to self-quarantine for 14 days. The last time the CDC had issued a quarantine was over 50 years ago in the 1960s, for smallpox. President Donald Trump signed an order on Jan. 31 for the U.S. to deny entry to foreign nationals who traveled to China within the preceding two weeks, aside from the immediate family of U.S. citizens.

President Donald Trump signed an order on Jan. 31 for the U.S. to within the preceding two weeks, aside from the immediate family of U.S. citizens. On Jan. 30, the CDC had confirmed the first case of person to person transmission in the U.S.: [12] the husband of the Chicago, Illinois case who had returned from Wuhan, China on Jan. 13 and who tested positive for the virus on Jan. 24).

the husband of the Chicago, Illinois case who had returned from Wuhan, China on Jan. 13 and who tested positive for the virus on Jan. 24). CDC stated on Jan. 30 that "It is likely there will be more cases of 2019-nCoV reported in the U.S. in the coming days and weeks, including more person-to-person spread." [12]

The virus had been confirmed in 5 states .

. On Jan. 31, New York City health officials vehemently denied the rumor regarding a coronavirus case in the city . [13] . On Feb. 1, however, the city's health commissioner did report that there was a test being performed on a person under 40 who had returned from China, developed matching symptoms, and tested negative to the seasonal flu.

health officials vehemently denied the rumor regarding a coronavirus case in the city . . On Feb. 1, however, the city's health commissioner did report that there was a test being performed on a person under 40 who had returned from China, developed matching symptoms, and tested negative to the seasonal flu. Most US patients had recently visited Wuhan .

. All of the first five U.S. cases were described as mild .

. A study on the first US case of novel coronavirus detailed mild symptoms followed by pneumonia

U.S. Airlines suspended ALL flights between the U.S. and China

On Friday, January 31, Delta, American and United announced they would temporarily suspend all of their mainland China flights in response to the coronavirus outbreak.[14]

Prior to this January 31 announcement:

UNITED AIRLINES

on Jan. 28 had announced it would cut 24 flights between the U.S. and China for the first week of February.

on Jan. 28 had announced it would cut 24 flights between the U.S. and China for the first week of February. AMERICAN AIRLINES

on Jan. 29 had announced it would suspend flights from Los Angeles to Shanghai and Beijing from Feb. 9 through March 27, 2020. It will maintain its flight schedules (10 daily A/R) from Dallas-Fort Worth to Shanghai and Beijing, as well as from Los Angeles and Dallas-Fort Worth to Hong Kong.

on Jan. 29 had announced it would suspend flights from Los Angeles to Shanghai and Beijing from Feb. 9 through March 27, 2020. It will maintain its flight schedules (10 daily A/R) from Dallas-Fort Worth to Shanghai and Beijing, as well as from Los Angeles and Dallas-Fort Worth to Hong Kong. DELTA

had not adjusted its schedule of direct flights from the U.S. to China. It is the only airline with direct flights to not take action so far.

Travel Alert: Do Not Travel to China

The U.S. State Department on January 30 issued a Level 4: Do Not Travel to China Alert [4] (the highest level of alert).

(the highest level of alert). Previously, on January 29, the advisory was set at a lower "Level 3: Reconsider Travel" advising not to travel to Hubei Province: (Level 4) and reconsider travel to the remainder of China (Level 3).

The CDC on Jan. 28 issued a Level 3 Warning, recommending that travelers avoid all nonessential travel to China [5].



Screening incoming passengers at 20 airports in the U.S.

The White House was considering issuing a ban on flights between the United States and China, as of late Jan. 28. Italy has announced on January 31 that it was suspending all flights to and from China following the first 2 cases of coronavirus in Italy.

On January 17, the CDC announced that 3 airports in the United States would begin screening incoming passengers from China: SFO, JFK, and LAX [6] Other 2 airports were added subsequently, and on January 28, the U.S. Department of Health and Human Services (HHS) announced that 15 additional U.S. airports (bringing the total to 20) would begin screening incoming travelers from China.

Below is the complete list of airports where screening for the 2019 Novel Coronavirus (2019-nCoV) is in place:

Los Angeles International (LAX)

San Francisco International (SFO)

Chicago O'Hare

New York JFK

Atlanta Hartsfield-Jackson International

Houston George Bush Intercontinental

Dallas-Fort Worth International

San Diego International

Seattle-Tacoma International

Honolulu International

Anchorage Ted Stevens International

Minneapolis-St. Paul International

Detroit Metropolitan

Miami International

Washington Dulles International

Philadelphia International

Newark Liberty International

Boston Logan International

El Paso International

Puerto Rico's San Juan Airport

Sources for the historical account