Level 2 Fire Restrictions in effect for western areas of Boulder County. No fireworks, fires, open flame, or shooting (see map and flyer).

Many County services are being offered online. Additionally, a variety of resources are available for those impacted by COVID-19.

COVID-19 Illness & Recovery Data
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COVID-19 Illness & Recovery Data

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Boulder County COVID-19 Illness & Recovery Summary

The information below is a summary of information about Boulder County residents who have tested positive for COVID-19 or are likely positive (Probable*) for COVID-19. The information is compiled and analyzed by Boulder County Public Health from disease investigations conducted with those who have tested positive for COVID-19 in the county combined with reports from the Colorado Department of Public Health and Environment, local hospitals, and the Boulder County Coroner.

Information will be updated daily by 4 p.m. Please note that details provided on the Colorado Department of Public Health and Environment website may not match this information due to delays in reporting. This information is subject to change at any time as disease investigations are ongoing.

Updated: Aug. 9 at 3 p.m. (Graphs are updated on Mondays and Thursdays.)

Illness & Recovery

The information below only represents individuals who have tested positive or are considered probable for COVID-19. There is confirmed community-wide spread in the community so it is likely that many more Boulder County residents have or have had the illness.

Boulder County Public Health is notified of Boulder County residents who test positive for COVID-19. Unfortunately, we are not notified, and do not have access to the total number of Boulder County residents who are tested for the disease (e.g. negative COVID-19 test results).

Status Number of Individuals in Boulder County
Tested Positive or considered Probable for COVID-19, to date* 2,070
Hospitalized due to COVID-19, to date 187
Recovered 795
Disease investigation currently in progress** 145
Deceased with COVID-19* 74

*Some data may be missing due to ongoing disease investigations and reporting delays.
**Does not include disease investigations currently in-progress within long-term care facilities.

Testing

The following information includes data about COVID-19 PCR (diagnostic) testing among Boulder County residents. Data presented includes 4 days prior to receiving the test result due to the average lag between the time a test is conducted and when the results are reported to the Colorado Department of Public Health and Environment.

Number of PCR (diagnostic) COVID-19 Tests Among Boulder County Residents, to Date 32,476
Overall Percent Positive Tests (PCR only) 4.86%
Current Five-day Average Percent Positive (PCR Tests only) 3.5%


Transmission Source

The graph below represents the source of transmission among residents who tested positive or are considered probable for COVID-19 and who knew the source of their exposure. Weeks with an asterisk (*) have incomplete data due to testing/reporting delays.

Community: transmission that occurred within Boulder County or another Colorado county where the ill person attends work or school. Limited person-to-person: primarily transmission within the household. Travel: transmission from travel outside of Boulder County, including to other Colorado counties, other states, and other countries.

An asterisk (*) denotes incomplete data due to testing delay. Only cases with a single known exposure are included in the graph.

Age

Age Range
Number of Individuals in Boulder County *
0-9 50
10-19 192
20-29 668
30-39 257
40-49 265
50-59 234
60-69 158
70-79 124
80+ 105

*Some data may be missing due to ongoing disease investigations and reporting delays. Includes both Positive and Probable.

Trends

This graph presents case counts by day rather than growth rates in total cases over time to increase interpretation and actionability of the data.

All graphs are updated on Monday & Thursday afternoons. To see the 5-day average of new cases graph every weekday, see the graph on the COVID-19 Summary Page.
Tip: On that page, to better see the changes, click on Cumulative Total Cases in the legend (lower right) to remove it from the graph.

Town/City of Residence

There is confirmed community-wide spread of COVID-19 in Boulder County, so regardless of where we live, we must all take the recommended precautions to stop the spread of the virus. Please note: The previous graphs used a street address to determine the municipality. The current method uses actual boundaries for cities as well as for unincorporated Boulder County. The new method is more accurate, though the actual case count may differ slightly from the previous graphs.

To protect patient privacy, municipalities with fewer than 3 people with confirmed or probable COVID-19 are not included, in alignment with the Colorado Department of Public Health and Environment.

Note: Due to rate instability, rates are not calculated for municipalities with fewer than 5 people positive or probable for COVID-19.

Race/Ethnicity

At the heart of disparities is systematic racism which research illustrates creates institutional barriers to things like preventive medical care, healthy food, safe and stable housing, quality education, reliable transportation, and clean air impact health outcomes. Hispanic/Latinx individuals in Colorado are also more likely to have some chronic diseases known to increase the potential severity of COVID-19, namely, overweight or obesity and diabetes. These chronic conditions are closely linked to the institutional barriers mentioned above.

Long-Term Care Facilities in Boulder County

Older individuals, those with underlying health conditions, and anyone who lives in a congregate setting, such as a long-term care facility is more at risk for contracting COVID-19, and at greater risk for severe illness and death from the virus. For detailed information about outbreaks in Boulder County long-term care facilities, visit the CDPHE outbreak data webpage.

Hospital Status

About this Information

Case Counts

Individuals (cases) are counted on the day in which they are reported to the state data system, regardless of the day the investigation was completed. There was one day – April 23, 2020 – in which a backlog of test results was received through this system.

Currently Hospitalized

Hospitalization information is determined during the first disease interview or through medical record review. Quality assurance processes may identify hospitalization after an interview occurred if medical record information can be located. We do not have access to information about who is no longer hospitalized with COVID-19.

Deaths

COVID-19 death data represents the total number of deaths reported among people who have tested positive or considered probable for COVID-19, even when COVID-19 may not have been the cause of death listed on the death certificate. This information is required by the CDC and is crucial for public health surveillance, as it provides more information about disease transmission and can help identify risk factors among all deaths across populations.

Deaths are identified through medical record review, notification by the Boulder County coroner, notification by a long-term care facility or other healthcare provider, and through information from the Colorado Department of Public Health and Environment including death certificates.

Boulder County Public Health reports deaths of individuals with COVID-19 who are Boulder County residents. The Boulder County Coroner reports all deaths that occur within the county, regardless of county of residence.

Disease Investigations

As with all reportable diseases, Boulder County Public Health staff contact each Boulder County resident who tests positive for COVID-19 to identify any person who may have come in close contact with the ill person. Each close contact who is identified as at-risk of contracting the disease is then contacted and provided guidance for next steps, including isolation, quarantine, and/or testing, if needed.

These practices are vital to identifying the presence of disease and the response actions needed to protect residents.

Probable

It may be deemed that a person is “Probable” (e.g. clinically diagnosed for COVID-19 or epidemiologically linked) if they came in close contact with a person who has tested positive for COVID-19 and was determined to be high risk during the disease investigation, AND they became symptomatic in the two weeks after contact with the ill person or the two weeks before, while they were infectious. Probable cases are determined using the CDC and Council of State and Territorial Epidemiologists case definition which includes both epidemiological and clinical criteria.

Recovery

An individual is considered “Recovered” if at least 10 days has passed since symptom onset AND they have been fever-free for at least 3 days AND symptoms have improved.

Individuals are confirmed to have recovered from COVID-19 during an interview with disease control staff. Because not everyone is able to be reached for follow-up, recovery data likely substantially underrepresents the true number of recovered individuals.

Testing

Testing data includes every individual for whom we have received a positive result for a diagnostic (PCR) test. Every individual is only counted once, even if they have multiple positive tests.

Individuals who received a positive antibody test are NOT considered confirmed cases. These individuals could be considered a probable case if they also meet clinical or epidemiological criteria. This represents less than 1% of Boulder County cases.

Testing data includes all tests among people who report a Boulder County residence regardless of where testing was received. Not all labs historically reported negative lab results but most labs now report both positive and negative test results.

The percent positive is calculated by dividing all positive PCR tests among Boulder County residents by all PCR tests performed among Boulder County residents since COVID-19 testing began. The 5-day average is the proportion of all tests that were positive over the last 5 days with complete data (3 days prior to the current day).

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