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MUSC COVID-19 Epidemiology Intelligence Project

MUSC global health epidemiologists and scientists present graphs to model the effects of COVID-19 in the regions MUSC serves. 

COVID-19 Status Summary by Location

Choose a region in South Carolina to view the status summary. Updated 1/20/2025

Charleston Area Information

 

Chart describes what to do if an alert is low, medium, or high for COVID-19.

TriCountyMUSCInternalJan16th2026.png A line chart for the MUSC Health Charleston Area (Tri-County) showing a downward trend in peak severity over three years. January 2024 saw roughly 85 patients, January 2025 saw nearly 70, and the current January 2026 peak is around 38. Unlike other regions, COVID-19 is a significant contributor here, often rivaling Influenza levels.

Line chart showing SARS-CoV-2 wastewater viral activity levels in South Carolina from 2022 to 2026, with recurring seasonal peaks and troughs over time.

ED Visits with Diagnosed COVID-19 (Regional Comparison) Multi-line chart comparing the percentage of ED visits diagnosed with COVID-19 across Charleston, Midlands, Pee Dee, and Catawba regions, showing a major peak in August–September and lower levels throughout the rest of the year.

SCRespGraphicJan16th2026.png A line chart showing the percentage of Emergency Room visits for COVID-19, Flu, and RSV in South Carolina from 2023 to 2026. The chart illustrates three distinct winter peaks driven by Influenza. The current peak in January 2026 reaches about 12%, which is lower than the January 2024 peak of roughly 16%.

SCRespGraphicJan16th2026.png A line chart showing the percentage of Emergency Room visits for COVID-19, Flu, and RSV in South Carolina from 2023 to 2026. The chart illustrates three distinct winter peaks driven by Influenza. The current peak in January 2026 reaches about 12%, which is lower than the January 2024 peak of roughly 16%.

TriCountyMUSCInternalJan16th2026.png A line chart for the MUSC Health Charleston Area (Tri-County) showing high overall patient volumes. The chart shows a downward trend in peak severity: January 2024 saw roughly 85 patients, January 2025 saw nearly 70, and the current January 2026 peak is around 38. Unlike other regions, COVID-19 is a significant and consistent contributor, often rivaling Influenza, while RSV shows clear but smaller winter peaks.

Line chart showing the percentage of MUSC Charleston Children’s Hospital emergency room visits for COVID-19, influenza, and RSV over time, with large winter influenza and RSV peaks.

Line chart showing the percentage of emergency department visits with diagnosed COVID-19 at MUSC Charleston Children’s Hospital over time, including a brief late-summer spike.

A graph shows the number of COVID-19 cases (per 100K) in the Charleston area between 2020 - 2023. The largest spike was January 2022.

Information details the prevalence of Long-COVID in SC among adults 18-years and older. 31% reported having COVID. 8% of all SC adults currently report experiencing post-COVID symptoms. 1.1% of all SC adults report currently experiencing long-term symptoms that reduce their ability to carry out day-to-day activities.

Florence Area Information

Respiratory Illness Data Tracker in text, representing COVID, Flu, and RSV

A graph shows Florence Area is relatively low for respiratory illnesses at the current time.

A graph showing the recommendations for public health for COVID-19, with threats are LOW, MEDIUM, and HIGH. When low, get tested and stay up-to-date. When medium, get tested, stay up-to-date, and talk to your healthcare provider if you are high risk. When threat of COVID is high, get tested, stay up-to-date, wear a mask indoors, and consider talking to your healthcare provider if you are high risk.

FlorenceMUSCInternalJan16th2026.png A line chart tracking hospitalized patients in the MUSC Health Florence Area. The data shows a large spike in January 2025 reaching nearly 50 combined patients, largely driven by Influenza. The current January 2026 spike is slightly smaller, reaching roughly 35 combined patients, again driven primarily by Influenza, while COVID-19 shows smaller, consistent waves.

Line chart showing SARS-CoV-2 wastewater viral activity levels in South Carolina from 2022 to 2026, with recurring seasonal peaks and troughs over time.

Line chart showing the percentage of emergency department visits with diagnosed COVID-19 across four MUSC regions (Charleston, Midlands, Pee Dee, and Catawba) over time, with peaks in winter and late summer.

Line chart showing the percentage of MUSC Pee Dee emergency room visits for COVID-19, influenza, and RSV over time, with pronounced winter influenza peaks and smaller RSV and COVID-19 levels.

SCRespGraphicJan16th2026.png A line chart showing the percentage of Emergency Room visits for COVID-19, Flu, and RSV in South Carolina from 2023 to 2026. The chart illustrates three distinct winter peaks driven by Influenza. The current peak in January 2026 reaches about 12%, which is lower than the January 2024 peak of roughly 16%.

Line chart showing the number of patients hospitalized with COVID-19, influenza, or RSV in the MUSC Florence area over time, with major winter surges dominated by influenza.

•	A graph shows the number of COVID-19 cases (per 100K) in the Florence area between 2020 - 2023. The largest spike was February 2022.

Information details the prevalence of Long-COVID in SC among adults 18-years and older. 31% reported having COVID. 8% of all SC adults currently report experiencing post-COVID symptoms. 1.1% of all SC adults report currently experiencing long-term symptoms that reduce their ability to carry out day-to-day activities.

Lancaster Area Information

Respiratory Illness Data Tracker in text, representing COVID, Flu, and RSV

Cases of respiratory illnesses in the Lancaster area are low.

A graph showing the recommendations for public health for COVID-19, with threats are LOW, MEDIUM, and HIGH. When low, get tested and stay up-to-date. When medium, get tested, stay up-to-date, and talk to your healthcare provider if you are high risk. When threat of COVID is high, get tested, stay up-to-date, wear a mask indoors, and consider talking to your healthcare provider if you are high risk.

LancasterMUSCInternalJan16th2026.png A line chart for the MUSC Health Lancaster Area showing hospitalization trends. The current peak in January 2026 (reaching roughly 26 combined patients) is the highest on the chart, surpassing the January 2025 peak of roughly 23 patients. Influenza is the dominant driver of the current surge, while COVID-19 and RSV remain low.

Line chart showing SARS-CoV-2 wastewater viral activity levels in South Carolina from 2022 to 2026, with recurring seasonal peaks and troughs over time.

Line chart showing the percentage of emergency department visits with diagnosed COVID-19 across four MUSC regions (Charleston, Midlands, Pee Dee, and Catawba) over time, with peaks in winter and late summer.

Line chart showing the percentage of MUSC Lancaster emergency room visits for COVID-19, influenza, and RSV over time, with influenza accounting for most seasonal increases.

SCRespGraphicJan16th2026.png A line chart showing the percentage of Emergency Room visits for COVID-19, Flu, and RSV in South Carolina from 2023 to 2026. The chart illustrates three distinct winter peaks driven by Influenza. The current peak in January 2026 reaches about 12%, which is lower than the January 2024 peak of roughly 16%.

Line chart showing the number of patients hospitalized with COVID-19, influenza, or RSV in the MUSC Lancaster area over time, with winter spikes primarily due to influenza.

A graph shows the number of COVID-19 cases (per 100K) in the Lancaster area between 2020 - 2023. The largest spike was January 2022.

Information details the prevalence of Long-COVID in SC among adults 18-years and older. 31% reported having COVID. 8% of all SC adults currently report experiencing post-COVID symptoms. 1.1% of all SC adults report currently experiencing long-term symptoms that reduce their ability to carry out day-to-day activities.

 

Midlands Area Information

Respiratory Illness Data Tracker in text, representing COVID, Flu, and RSV.

Cases of respiratory illnesses are currently low in the Midlands area.

A graph showing the recommendations for public health for COVID-19, with threats are LOW, MEDIUM, and HIGH. When low, get tested and stay up-to-date. When medium, get tested, stay up-to-date, and talk to your healthcare provider if you are high risk. When threat of COVID is high, get tested, stay up-to-date, wear a mask indoors, and consider talking to your healthcare provider if you are high risk.

MidlandsINDBOXJan16th2026.png A data dashboard for the Midlands region. Key statistics include a 20% decrease in weekly ER visits for respiratory viruses. However, inpatient RSV cases rose by 100%, while Influenza cases dropped 33%. Wastewater viral activity is listed as "Moderate" for Kershaw and "High" for Richland.

Line chart showing SARS-CoV-2 wastewater viral activity levels in South Carolina from 2022 to 2026, with recurring seasonal peaks and troughs over time.

Line chart showing the percentage of emergency department visits with diagnosed COVID-19 across four MUSC regions (Charleston, Midlands, Pee Dee, and Catawba) over time, with peaks in winter and late summer.

Line chart showing the percentage of MUSC Midlands emergency room visits related to COVID-19, influenza, and RSV over time, with influenza producing the highest peaks.

SCRespGraphicJan16th2026.png A line chart showing the percentage of Emergency Room visits for COVID-19, Flu, and RSV in South Carolina from 2023 to 2026. The chart illustrates three distinct winter peaks driven by Influenza. The current peak in January 2026 reaches about 12%, which is lower than the January 2024 peak of roughly 16%.

MidlandsMUSCInternalJan16th2026.png A line chart for the MUSC Health Midlands Area. It displays a very high peak in January 2025 (reaching 55 combined patients) and a significant current spike in January 2026 (reaching nearly 40 patients). Both winter peaks are driven heavily by Influenza. COVID-19 shows distinct waves in late summer and winter, peaking around 15–20 patients at its height.

A graph shows the number of COVID-19 cases (per 100K) in the midlands area between 2020 - 2023. The largest spike was January 2022.

Information details the prevalence of Long-COVID in SC among adults 18-years and older. 31% reported having COVID. 8% of all SC adults currently report experiencing post-COVID symptoms. 1.1% of all SC adults report currently experiencing long-term symptoms that reduce their ability to carry out day-to-day activities.

About the Project

MUSC's COVID-19 Epidemiology Intelligence Project analysis has been developed to:

  1. Provide analysis of trends in the COVID-19 epidemic to assist with understanding the current and projected status of transmission, impacts to the community and hospital system, and the success of mitigation efforts. Our goal is also to provide information that can help assess each stage of the pandemic and provide vital health information to our community.
  2. Help us better understand and predict the critical needs of our hospitals, health care teams, in the Charleston, Berkeley, Dorchester, Florence, Marion, Darlington, Williamsburg, Chester, Lancaster, Kershaw, Richland, and Fairfield communities so that we can plan for and mitigate the impact of COVID-19 to the best of our ability.
  3. Provide reliable data to help guide and support decision making by policymakers, business leaders, and members of the general public across the aforementioned regions.

Data used in trend analysis comes from SCDHEC, MUSC clinical data, and The Center for Disease Control. Data used in the models comes from the Census Bureau, literature reviews, The U.S. Department of Health and Human Services, and internal clinical data.

How Often Are the Graphs Updated?

The goal of the project is to update analysis once per week.

Project Team

  • Michael D. Sweat, Ph.D., professor, MUSC Department of Psychiatry and Behavioral Sciences; director, Division of Global and Community Health; and faculty director, MUSC Center for Global Health – Project Director
  • Veronique Whittaker, MPH, Lead research analyst, Department of Psychiatry and Behavioral Sciences, Division of Global and Community Health
  • Eric Meissner, M.D., Ph.D., assistant professor, Department of Medicine, Division of Infectious Diseases
  • Kathleen Ellis, executive director, MUSC Center for Global Health

With special thanks to:

  • Claire Bailey, MPH, RD, former program coordinator, Department of Psychiatry and Behavioral Sciences, Division of Global and Community Health
  • Virginia “Ginny” Fonner, Ph.D., MPH, former assistant professor, Department of Psychiatry and Behavioral Sciences, Division of Global and Community Health

And our medical student volunteers from early 2020:

  • William “Alex” Parler, MUSC College of Medicine student
  • Gregory "Brian" Elmore, MUSC College of Medicine student

Methods & Metrics

  • Weekly Percent Change of MUSC Emergency Department Visits with a COVID-19, Flu, or RSV Diagnosis -This is the change in the weekly percentage of people in Emergency Departments due to Influenza-like-illness across MUSC's regional hospitals. These percentages are drawn directly from internal MUSC data.  
  • Average Weekly Deaths due to COVID-19 -This is the average number of weekly deaths due to COVID-19 per 100k people in South Carolina. These data are drawn from: https://covid.cdc.gov/covid-data-tracker/#trends_weeklydeaths_totaldeathratecrude_45
  • Percentage of Emergency Room Visits for COVID-19, Flu, and RSV in South Carolina -These data are presented by the CDC and are updated weekly. Data available at: https://data.cdc.gov/Public-Health-Surveillance/2023-Respiratory-Virus-Response-NSSP-Emergency-Dep/vutn-jzwm
  • MUSC Inpatient COVID-19, Influenza, RSV Patients -These data come directly from MUSC and are reported daily counts. We update these data weekly. If the cases are below 5, we will report this as an N/A.
  • South Carolina COVID-19 Wastewater Viral Activity Levels -These are current wastewater viral activity levels of SARS-COV-2 across wastewater treatment plants or sampling locations in the state of South Carolina. These levels are drawn from CDC and are updated weekly. Data available at: https://www.cdc.gov/nwss/rv/COVID19-statetrend.html?stateval=South%20Carolina
  • Household Pulse Survey -These data are drawn from The U.S. Census Bureau’s Household Pulse Survey, as part of an ongoing partnership between the Census Bureau and The National Center for Health Statistics (NCHS) and includes questions to assess the prevalence of post-COVID-19 conditions (long COVID), on the experimental Household Pulse Survey. These data are weighted, and the details can be found at: https://www.cdc.gov/nchs/covid19/pulse/long-covid.htm

Covid-19 Impact Criterion for Level Status

These community risk levels are informed by The Center for Disease Control's calculation of COVID-19 risk and public health recommendations. The thresholds are for the Charleston Metro Area (Charleston, Berkeley, and Dorchester). Further information can be found on the CDC website (Center for Disease Control and Prevention Website).

We report the growth rate of COVID-19 in weekly Internal MUSC Emergency Department visits and hospital admissions per 100k people. Risk Levels are defined as follows: Low, Medium, and High. We will include the wastewater data if it becomes available across all sites again.

LOW: The weekly ED visits are under 5% for two consecutive weeks.
MEDIUM: The weekly ED visits are above 5%. 
HIGH: The weekly ED visits are above 10%.    
Metrics shown reflect the day events occurred, not the day they were reported. DHEC releases data on a weekly basis.