Coronavirus disease 2019 (COVID-19) situation summary

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*The situation report includes information provided by national authorities as of 10 AM Central European Time [†As reported by China]

ATLANTA, Georgia – Centers for Disease Control and Prevention (CDC) is closely monitoring an outbreak of respiratory disease caused by a novel (new) coronavirus that was first detected in Wuhan City, Hubei Province, China and which continues to expand. On February 11, 2020, the World Health Organization named the disease coronavirus disease 2019 (abbreviated “COVID-19”).

Chinese health officials have reported tens of thousands of cases of COVID-19 in China, with the virus reportedly spreading from person-to-person in parts of that country. COVID-19 illnesses, most of them associated with travel from Wuhan, also are being reported in a growing number of international locations, including the United States. Some person-to-person spread of this virus outside China has been detected. The United States reported the first confirmed instance of person-to-person spread with this virus on January 30, 2020.

On January 30, 2020, the International Health Regulations Emergency Committee of the World Health Organization declared the outbreak a “public health emergency of international concernexternal icon” (PHEIC). On January 31, 2020, Health and Human Services Secretary Alex M. Azar II declared a public health emergency (PHE) for the United States to aid the nation’s healthcare community in responding to COVID-19. Also on January 31, the President of the United States signed a presidential “Proclamation on Suspension of Entry as Immigrants and Nonimmigrants of Persons who Pose a Risk of Transmitting 2019 Novel Coronavirusexternal icon.” These measures were announced at a press briefing by members of the President’s Coronavirus Task Forceexternal icon.

Coronaviruses are a large family of viruses that are common in many different species of animals, including camels, cattle, cats, and bats. Rarely, animal coronaviruses can infect people and then spread between people such as with MERS, SARS, and now with this new virus (named SARS-COV2).

Source and spread of the Virus

Chinese health authorities were the first to post the full genome of the SARS-COV2 virus in GenBankexternal icon, the NIH genetic sequence database, and in the Global Initiative on Sharing All Influenza Data (GISAIDexternal icon) portal, an action which has facilitated detection of this virus. CDC is posting the full genome of the SARS-COV2 viruses detected in U.S. patients to GenBank as sequencing is completed.

The SARS-COV2 virus is a betacoronavirus, like MERS and SARs, both of which have their origins in bats. The sequences from US. patients are similar to the one that China initially posted, suggesting a likely single, recent emergence of this virus from an animal reservoir.

Early on, many of the patients in the COVID-19 outbreak in Wuhan, China had some link to a large seafood and live animal market, suggesting animal-to-person spread. Later, a growing number of patients reportedly did not have exposure to animal markets, indicating person-to-person spread. Chinese officials report that sustained person-to-person spread in the community is occurring in China. Person-to-person spread has been reported outside China, including in the United States and other countries. Learn what is known about the spread of newly emerged coronaviruses.

Situation in the US

Imported cases of COVID-19 in travelers have been detected in the US Person-to-person spread of COVID-19 also has been seen among close contacts of returned travelers from Wuhan, but at this time, this virus is NOT currently spreading in the community in the United States.

The US government has taken unprecedented stepsexternal icon related to travel in response to the growing public health threat posed by this new coronavirus, including suspending entry in the United States of foreign nationals who have visited China within the past 14 days. Measures monitor the health of those who are allowed entry into the United States (U.S. citizens, residents and family) who have been in China within 14 days also are being implemented.

Illness severity

Both MERS and SARS have been known to cause severe illness in people. The complete clinical picture with regard to COVID-19 is not fully understood. Reported illnesses have ranged from mild to severe, including resulting in death. Learn more about the symptoms associated with COVID-19.

There are ongoing investigations to learn more. This is a rapidly evolving situation and information will be updated as it becomes available.

Risk assessment

Outbreaks of novel virus infections among people are always of public health concern. The risk from these outbreaks depends on the characteristics of the virus, including how well it spreads between people, the severity of resulting illness, and the medical or other measures available to control the impact of the virus (for example, vaccine or treatment medications).

The potential public health threat posed by COVID-19 virus is high, both globally and to the United States. The fact that this virus has caused illness, including illness resulting in death, and sustained person-to-person spread in China is concerning. These factors meet two of the criteria of a pandemic. It’s unclear how the situation will unfold, but the risk is dependent on exposure. At this time, some people will have an increased risk of infection, for example, healthcare workers caring for patients with COVID-19 and other close contacts of patients with COVID-19. For the general American public, who are unlikely to be exposed to this virus, the immediate health risk from COVID-19 is considered low at this time.

What to expect

More cases are likely to be identified in the coming days, including more cases in the United States. It’s also likely that person-to-person spread will continue to occur, including in the United States.

This is a picture of CDC’s laboratory test kit for the 2019 novel coronavirus (2019-nCoV).

CDC response

This is a picture of CDC’s laboratory test kit for the 2019 novel coronavirus (2019-nCoV). CDC is shipping the test kits to laboratories CDC has designated as qualified, including U.S. state and local public health laboratories, Department of Defense (DOD) laboratories and select international laboratories. The test kits are bolstering global laboratory capacity for detecting 2019-nCov.

WHO – Coronavirus disease 2019 (COVID-19) – Situation Report – 24  Data as reported by 13 February 2020*

 

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