Health & Fitness

'High' COVID Spread In 13 Maryland Counties: CDC

The CDC recommends mask use in jurisdictions with "high" or "substantial" transmission of the virus. All 24 Maryland jurisdictions qualify.

All of Maryland has "high" or "substantial" transmission of the coronavirus.
All of Maryland has "high" or "substantial" transmission of the coronavirus. (CDC)

MARYLAND — Officials say 13 counties in Maryland now have a high rate of transmission and 11 have substantial rates of transmission of the coronavirus.

Fully vaccinated people as well as those who have not been vaccinated against COVID-19 should wear masks indoors in public if they live in an area with "substantial" or "high" transmission of the virus, the Centers for Disease Control and Prevention (CDC) recommends.

Those who aren't fully vaccinated are urged to wear masks in public no matter what the level of transmission is, according to the CDC.

Find out what's happening in Baltimorefor free with the latest updates from Patch.

Baltimore City as well as Montgomery and Prince George's counties have mandated masks indoors regardless of vaccination status. Of those, Prince George's County is the only one where spread has been deemed "high," while the others have "substantial" transmission of the virus.

Transmission levels are determined either by new cases per 100,000 residents in the last seven days or the percentage of coronavirus tests that come back positive; the higher category determines the transmission level.

Find out what's happening in Baltimorefor free with the latest updates from Patch.

Thresholds

New cases per 100,000 in past seven days

  • Low: 0-9.99
  • Moderate: 10-49.99
  • Substantial: 50-99.99
  • High: >100

Positive test rate

  • Low: <5
  • Moderate: 5-7.99
  • Substantial: 8-9.99
  • High: >10

The latest CDC statistics cover the Aug. 7 to Aug. 13 period for case rates and Aug. 4 to Aug. 11 for positivity rate in Maryland.

These Maryland counties have "high" spread, according to the CDC:

  • Allegany County
  • Caroline County
  • Cecil County
  • Charles County
  • Dorchester County
  • Frederick County
  • Kent County
  • Prince George's County
  • Somerset County
  • St. Mary's County
  • Washington County
  • Wicomico County
  • Worcester County

These Maryland jurisdictions have "substantial" spread, according to the CDC:

  • Anne Arundel County
  • Baltimore City
  • Baltimore County
  • Calvert County
  • Carroll County
  • Garrett County
  • Harford County
  • Howard County
  • Montgomery County
  • Queen Anne's County
  • Talbot County

Maryland is one of six states with "substantial" transmission. Maine, Michigan, New Hampshire, Pennsylvania and Vermont. All others have been deemed "high" transmission.

The Northern Mariana Islands, Palau and Republic of the Marshall Islands have low transmission rates, according to the CDC.

Courtesy of the CDC.

The delta variant of the coronavirus continues to drive case rates higher in the U.S., especially in places with low vaccination rates.

Anyone in an area with substantial or high levels should wear masks indoors, based on guidelines issued by the Centers for Disease Control and Prevention (CDC).

See Also:

The CDC also recommends indoor public mask use for people with compromised immune systems or other high-risk factors, regardless of vaccination status. People who live with someone at higher risk for coronavirus complications should also consider using masks.

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