COVID-19 Dashboard


Note: July 2 will be the last day this dashboard is updated daily on weekdays. Starting Wednesday, July 7, the dashboard will be updated weekly. More information is available in our July 2 report (available at placer.ca.gov/coronavirus/news) and additional daily Placer data is available on the state website.

Please note that while case statistics reflect the most current data at the time of reporting, all figures presented on the dashboard are subject to change as new information is gathered.

Cases:

  1. “Total Cases” reflects laboratory-confirmed cases who are Placer County residents. Only positive PCR or NAAT tests (tests that detect viral RNA) are included. Antigen tests and antibody (serology) tests are not included. An individual who tests positive on multiple occasions is only counted as a single case.

  2. “Average Daily Cases” reflects the 7-day daily average number of cases with episode dates within the previous 7-day period. It is calculated by adding up the total number of cases with episode dates landing on each of the prior 7 days and then dividing by 7. The figure is lagged by 7 days to allow for receipt of new cases.

  3. Placer County’s estimate of “likely recovered cases” includes cases who have not died due to COVID-19 and for whom 21 days have passed since their episode date. Due to the variable nature of the disease and recovery, “likely recovered cases” is an estimate and may not reflect the true number of cases who have fully recovered from infection. The period of 21 days after episode date indicates the time after which an individual would likely no longer pose an infectious risk, as moderate to severe cases often require greater than 10-14 days to meet symptom-based clearance criteria.

  4. “Total Deaths” reflects COVID-related deaths among laboratory-confirmed cases who are Placer County residents. COVID-related deaths have COVID-19 disease or SARS-CoV-2 listed as a cause of death or a significant condition contributing to death on the death certificate. This is consistent with the case definition set forth by the Council of State and Territorial Epidemiologists and adopted by CDPH.

  5. Confirmed case dates reflect the episode date. Episode date is defined as the earliest of several dates associated with a confirmed case (illness onset date, specimen collection date, date of death, or date reported). These dates are now sourced from CalREDIE. Counts for any given day (particularly the most recent 7-14 days) are likely to increase as new results are received.

Hospitalizations and Deaths:

  1. “Total Deaths” reflects COVID-related deaths among laboratory-confirmed cases who are Placer County residents. COVID-related deaths have COVID-19 disease or SARS-CoV-2 listed as a cause of death or a significant condition contributing to death on the death certificate. This is consistent with the case definition set forth by the Council of State and Territorial Epidemiologists and adopted by CDPH.

  2. Total confirmed COVID-19 cases in Placer hospitals include hospitalized COVID-19 cases in ICU. Confirmed COVID-19 cases hospitalized within Placer County include non-Placer residents. Placer County residents hospitalized in Placer hospitals may not reflect the total number of Placer County residents hospitalized due to COVID-19, as some residents are in hospitals outside the county. Public Health began collecting residency information from Placer County’s three hospitals in July. Cases hospitalized “Because of COVID” excludes confirmed COVID-19 cases who are hospitalized for trauma, maternity, or other unrelated causes. Hospital bed availability data is now sourced directly from the daily hospital polling done by the California Hospital Association (CHA). Hospital bed availability counts from CHA reflect data from the previous day. Aggregated counts may incorporate older data depending on timeliness of reporting from individual hospitals. The definitions provided by CHA for total beds are as follows:
    –Total Non-Surge Inpatient Beds Adult: The total number of all staffed inpatient adult beds in your hospital (including all ICU beds). If the bed is not currently staffed or equipped but is usable and has the potential to be staffed and equipped using routine available hospital resources and staffing, it should be counted. This number should also include outpatient beds that are holding inpatients who are boarding, and should exclude surge beds.
    –ICU Non-Surge Total Beds Adult: The current number of physical, staffed adult intensive care beds in the facility. If the intensive care bed is not currently staffed and equipped but is usable and has the potential to be staffed and equipped using routine available hospital resources and staffing it should be counted. The same would apply to a blocked intensive care bed. If the intensive care bed is currently blocked, but is a usable bed, it should be counted. This number should exclude surge beds.
    The available beds for these categories are then obtained by subtracting the “occupied” bed numbers from the “total” bed numbers in these categories.

Cases by Zip Code:

  1. Cases who do not have a valid zip code will not be included on the map or the table of cases by zip code or region, but are included in total case counts.

  Zip code designations:

   South Placer: 95681, 95648, 95658, 95663, 95650, 95746, 95677, 95765, 95747, 95678, 95661, 95626

   Mid Placer: 95603, 95602, 95722, 95703, 95631, 95713, 95717, 95714, 95701, 95715, 95724

   East Placer: 96161, 96146, 96143, 96140, 96145, 96142, 96148, 96141, 96162

Case Rate and Testing Data:

  1. Whereas laboratory-confirmed case numbers reflect only Placer County residents, negative results may also include some non-Placer residents whose tests were performed within the county. Total negative results include results for individuals who have been tested more than once. This differs from the count of total confirmed cases, as individuals who test positive on multiple occasions are only counted as a single case. For this reason, these two numbers (total confirmed cases and total negative test results) are not comparable and should not be used together to calculate a positivity rate. Only PCR or NAA tests (tests that detect viral RNA) are included. Antigen tests and antibody (serology) tests are not included.

  2. The 7-day testing positivity rate is the average percentage of all PCR/NAA tests that were positive over the last 7 days. The graph of testing positivity rate over time now begins on March 12th, 2020 so that the y-axis range allows for more informative comparison of positivity rates day-to-day. Previously this graph began on March 1st, 2020. The figure shown is lagged by 7 days to allow for receipt and transfer of additional results. This figure is calculated by the California Department of Public Health. Per the CDPH website: “7-day testing positivity: The total number of positive polymerase chain reaction (PCR) tests divided by the total number of PCR tests conducted. This number is then multiplied by 100 to get a percentage. Due to reporting delay (which may be different between positive and negative tests), there is a 7-day lag. For example, a case rate calculated on April 1st would correspond to specimens collected between March 18th – March 24th.” Source: https://www.cdph.ca.gov/Programs/CID/DCDC/Pages/COVID-19/CountyMonitoringDataStep1.aspx
    The 7-day average of daily tests is the average number of PCR/NAA tests conducted each day over the last 7 days, based on specimen collection date. This figure is calculated by CDPH and is lagged by 7 days to allow for receipt and transfer of additional results.

  3. The 7-day average daily case rate per 100,000 is the average number of new cases per day over the past 7 days per 100,000 residents ((total new cases for past 7 days/7) / 400,434*100,000). This figure is calculated by CDPH based on the episode date, which is the earliest of several dates associated with a confirmed case (illness onset date, specimen collection date, date of death, or date reported). The figure shown is lagged by 7 days to allow for receipt and transfer of additional results. The figure displayed does not take into account the adjustment factor for case rates based on county-level testing rates that is used by CDPH in their tier assignments for county monitoring. Therefore, the figure displayed may not accurately correspond to the tier to which Placer County has been assigned by CDPH. To see Placer County’s adjusted case rate and tier assignment, please visit CDPH’s Blueprint for a Safer Economy website and select Placer County from the map.

  4. The 14-day regional case rates per 100,000 are calculated as the sum of new cases in the past 14 days per 100,000 residents by region (total new cases for past 14 days/[regional population]*100,000). The calculation is lagged by 3 days. This figure is calculated based on the episode date, which is the earliest of several dates associated with a confirmed case (illness onset date, specimen collection date, date of death, or date reported). Cases that do not have a valid zip code will not be included in the calculations for regional case rates, but are included in overall case rates and other overall metrics.

Vaccinations:

  1. Vaccination data includes all doses that were administered to Placer County residents, regardless of the County in which they were administered. The value for ‘Total Doses Administered’ is obtained by adding together the total values for ‘First Doses’ and ‘Second Doses or Complete Doses’ following deduplication of records. Johnson & Johnson vaccine doses are counted in the ‘Second Doses or Complete Doses’ category, as this vaccine formulation is given as a single complete dose.

  2. Percent of age group with at least one vaccine dose is calculated by comparing the number of individuals within the age category who received the first dose of the vaccine to the total population of Placer County residents in that age category. The population values by age group are sourced from the California Department of Public Health (CDPH) which uses data from the California Department of Finance Population Projections.

  3. The graph of cumulative vaccinations administered to Placer County residents by dose number displays data through two days prior to the current day. The database contains records of vaccinations administered through the previous day, and an additional day of lag is added to allow time for new records to be entered into the database. Johnson & Johnson vaccine doses are counted in the ‘Second Doses or Complete Doses’ category, as this vaccine formulation is given as a single complete dose.

  4. The graph of daily and 7-day average vaccines administered to Placer County residents displays data through two days prior to the current day. The database contains records of vaccinations administered through the previous day, and an additional day of lag is added to allow time for new records to be entered into the database.

State data on COVID-19 cases is available for public use here: https://data.ca.gov/dataset/covid-19-cases

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