Calvert County Health Department

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Coronavirus Update: New COVID Quarantine Rules: What? Why?The CDC revised guidance for people who have had close contact for at least 15 minutes with someone recently diagnosed with COVID. First a bit of background. Since March, the CDC has recommended that everyone with close exposure quarantine themselves for 14 days to prevent the spread of the virus to others. As researchers have learned more about the infection, we now understand that for those who do not become sick by the 7th day after exposure, the likelihood of them transmitting the infection to others is still 11%. By the 10th day after exposure, the potential is down to 1.4%.

The CDC’s new guidance decreases the length of quarantine to 10 days after exposure as long as the person has not gotten sick. There is an alternative quarantine of 7 days if someone also has a negative COVID test 1-2 days before that and stays healthy through day 7. Having a negative PCR test, which usually takes 2-4 days to come back from the lab, reduces the risk of a person transmitting the virus from 1 in 9 down to 1 in 25. Rapid tests are not nearly as accurate in detecting infections prior to the onset of symptoms. As a result, a rapid test along with no symptoms by day 7, leaves a 1 in 12 to 1 in 18 chance that a person is still infectious to others. > Read More

COVID-19 Post Archive
2020-2021 Flu Season
In an average year, 25,000 Americans die from influenza and hundreds of thousands are hospitalized. Millions more become sick enough to miss time from work or school.> Read More

Complete Flu Vaccination Schedule and other Information

2019 Novel Coronavirus (CDC)

Calvert Services Available for Families During COVID-19 Closure

Public Health Updates

Upcoming Wet Season Information
Groundwater levels are rising substantially and therefore we are asking for all lot corners or test locations to be staked out at this time. Based on trends, we expect to schedule wet season percolation tests in early to mid December 2020 > Read More

Well and Septic Education
University of Maryland Extension is hosting monthly webinars on various water quality related topics. The webinars will be held via Zoom. Learn More:
Wednesday Water Webinars

Septic Smart Webinar Recording

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Calvert Vital Records Open by Appointment
Calvert County Vital Records offers in person services by appointment only for Birth & Death certificates. State guidelines are still in effect & we ask that you wear a mask when entering the building and during services received. > More info

Maryland Health Connection

Open Enrollment Until December 15, 2020
New Health Plans are available for 2021. All plans include doctor visits, mental health care, prescriptions, COVID-19 testing and treatment, and more. You have until December 15, 2020 to sign up.
> More info


  Cases Deaths
Maryland 212,384 4,659
Calvert County 2004 20
United States

Covid Chart

Calvert COVID-19 Positivity Rates
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12-04-2020: The Division of Community Health will close for the day at 12:30 pm for staff training.

View all events and schedules

          Hours of Operation:
    Monday – Friday (excluding     holidays) 8:00 am – 5:00 pm.     Community Health clinics end
    at 4:30 pm. In case of inclement     weather, please call

    For After Hours Public Health     Emergencies Contact the Control     Center at: 410-535-3491  facebook   Instagram


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975 Solomons Island Road North, PO Box 980, Prince Frederick, MD 20678 | (410) 535-5400 | Fax: (410) 535-5285
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