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COVID-19 Epidemiology Info for Missoula County

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Important notes for interpreting epidemiology charts:

1. The Epidemiology Curve chart shows date of symptom onset - not date of diagnosis.  The date of a person's test is less relevant than the date at which they became symptomatic.

2. The COVID-19 Incidence by Age Group chart is not a chart of the raw data/numbers of cases per age group. It normalizes each age group's population to 100,000 in order to compare relative incidence between age groups.  For example, on April 29, the data showed more than 60 cases per 100,000 20-29 -year-olds in Missoula County.  It does not say there were more than 60 cases in this age range in Missoula County. Rather, if we had 100,000 people in that age range, based on the data we have so far, we would expect about 60 of them to be diagnosed with COVID-19.

This page will be updated as we receive data from our epidemiology team.

Last update: July 28, 2020. The below charts reflect positive cases through July 27, 2020.


Epidemiology Curve 

 A bar chart showing Missoula County COVID-19 cases by date of symptom onset.


COVID-19 Incidence by Age Group

 A bar chart showing the incidence of COVID-19 in Missoula County as a proportion of each age group


Missoula County COVID-19 Cases

 A table describing the demographics of COVID-19 cases in Missoula County


Additional Charts

 A bar chart showing symptoms demonstrated by positive COVID-19 cases by gender.

 A bar chart showing symptoms demonstrated by positive COVID-19 cases by age group.

 A pie chart showing the distribution of numbers of close contacts

 A table showing the distribution of numbers of close contacts by age group

 A pie chart showing the number of hospitalizations requiring ventilation

 A pie chart showing the distribution of positive COVID-19 cases by age group

 A pie chart showing the distribution of positive COVID-19 cases by gender

 A bar chart showing the date of positive COVID-19 test results in Missoula County. Current as of June 24, 2020.

 A bar chart showing dates of positive COVID-19 diagnoses in Missoula County