Cases of COVID-2019 reported in multiple areas of the US early March. Maintain strict basic health precautions.

Severity: Informational Alert

The locations affected by this alert are:

  • Atlanta, Georgia
  • Chicago, Illinois
  • Houston, Texas
  • Los Angeles, California
  • Washington, DC
  • Boston, Massachusetts
  • Las Vegas, Nevada
  • New York City, New York
  • Raleigh, North Carolina
  • San Diego, California
  • San Francisco, California
  • San Jose, California
  • Seattle, Washington
  • Baltimore, Maryland
  • Nashville, Tennessee
  • Oakland, California
  • Phoenix, Arizona
  • Portland, Oregon
  • Providence, Rhode Island
  • Sacramento, California
  • San Antonio, Texas
  • Tampa, Florida
  • Newark, New Jersey
  • Pensacola, Florida
  • Madison, Wisconsin
  • Sarasota-Bradenton, Florida
  • Hanover-Lebanon, New Hampshire
  • Orange County, California
  • Annapolis, Maryland
  • Galveston-Texas City, Texas
  • Everett, Washington
  • Santa Rosa, California
  • Mesa, Arizona
  • Breckenridge, Colorado
  • Fremont, California
  • White Plains, New York
  • Napa, California
  • Palo Alto, California
  • Paterson, New Jersey
  • Pleasant Hill, California
  • Santa Clara, California
  • Anaheim

This alert began 06 Mar 2020 06:40 GMT and is scheduled to expire 14 Mar 2020 23:59 GMT.

  • Incident: Imported cases of coronavirus disease (COVID-19), limited local transmission
  • Location(s): Multiple areas (map)
  • Period: January-March 2020
  • Cases: 191

US authorities have identified 191 confirmed and presumptive positive cases of coronavirus disease (COVID-19) according to data through March 5. These figures include individuals aboard federal repatriation flights and those who returned following quarantine aboard the Diamond Princess cruise ship. These figures may change or fluctuate as additional data becomes available. Some states choose to provide more detailed location information than others, such as specific cities or a breakdown of confirmed cases by county.

Local disease transmission:

  • California: 60 cases among Humboldt, Contra Costa, Los Angeles, Orange, Placer, Sacramento, San Benito, San Diego, San Francisco, San Mateo, Santa Clara, Sonoma, Orange, and Yolo counties. Community transmission reported in Santa Clara County, Los Angeles County, and San Francisco.
  • New York: 22 cases among Westchester County, Nassau County, and New York City. 18 of these cases were reported in Westchester County
  • Washington: 70 cases among King, Snohomish, and Grant counties, primarily in the greater Seattle area
  • Illinois: 5 cases in Cook County

Imported cases only:

  • Arizona: 2 cases in Maricopa County
  • Colorado: 2 cases in Summit County
  • Florida: 4 cases among Sarasota, Hillsborough, and Santa Rosa County
  • Georgia: 2 cases in Fulton County
  • Maryland: 3 cases in Montgomery County
  • Massachusetts: 4 cases, 1 each in Middlesex, Norfolk, and Norwell counties, 1 in Boston
  • New Hampshire: 2 cases in Grafton County
  • New Jersey: 2 cases in Bergen County
  • North Carolina: 1 case in Wake County
  • Oregon: 3 cases, 2 in Washington County and 1 in Umatilla
  • Rhode Island: 2 cases, one each in Pawtucket and Providence
  • Tennessee: 1 case in Williamson County
  • Texas: 5 cases, 1 in San Antonio, 1 in Fort Bend County, 3 in Harris County
  • Wisconsin: 1 case in Madison County

Background and Analysis
Additional cases and locations may be added to this list at any time as disease surveillance and testing continues. Older individuals, infants, and those with chronic illness are more susceptible to infection and are at increased risk for severe complications. Human-to-human transmission can occur, though it remains unclear how easily the virus spreads between people.

Coronavirus disease 2019 (COVID-19) is a viral respiratory disease caused by infection with the SARS-CoV-2 virus (previously known as 2019-nCoV). Symptoms occur 1-14 days following exposure (average of 3-7 days). These symptoms include fever, fatigue, cough, difficulty breathing, sometimes worsening to pneumonia and kidney failure - especially in those with underlying medical conditions.

Emphasize basic health precautions, especially frequent handwashing with soap and water, or an alcohol-based hand sanitizer if soap and water are unavailable. Practice good coughing/sneezing etiquette (i.e., covering coughs and sneezes with a disposable tissue, maintaining distance from others, and washing hands). There is no evidence that the influenza vaccine, antibiotics, or antiviral medications will prevent this disease, highlighting the importance of diligent basic health precautions.

WHO advice for international travel

WHO coronavirus knowledge base

WHO: Getting your workplace ready for COVID-19

US CDC: Guidance for Businesses and Employers

US CDC: Preventing COVID-19 Spread in Communities

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