Understanding Epi Curve of Cases Over Time
The Epi Curve of Cases Over Time graph shows the number of lab-confirmed cases recorded each day. Cases are based on positive Coronavirus tests within Harris County. These confirmed test results are provided by the State of Texas, Hospitals, and Commercial Labs.
The graph shows COVID-19 cases with the date of each case assigned based on information collected by epidemiologists when they investigate a lab-confirmed positive case. This date is based on multiple criteria which goes in order of...
- Date of symptom onset: The date symptoms began, as reported by the individual. This date may fall before date of diagnosis.
- Date of specimen collection: The date of collection of the first lab-confirmed positive specimen.
- Date of laboratory result: The date of the first laboratory confirmed positive test result.
- Date of first report to the public health system: The date the case was first reported to the local health department.
*It is important to note that a high volume of cases reported for these dates does not mean that all cases are currently Active.
Filter Cases By Epi Curve
When a date (or multiple dates) is selected within the Epi Curve of Cases Over Time graph, the other elements in this dashboard will adjust to show only those cases with an epi date matching what is selected. These elements include:
- Confirmed Cases
- Active Cases
- Recovered Cases
- Sex Impacted
- Age Groups Impacted
View Specific Timeframes
To view specific timeframes in this graph, simply use the slider at the top of the graph to change the start and end date of data shown. Multiple dates can also be selected one-by-one or by clicking and dragging your cursor over the desired bars in the graph.