About this Dataset

Respiratory Virus Weekly Report

Data is from the California Department of Public Health (CDPH) Respiratory Virus Weekly Report.

The report is updated each Friday.

Laboratory surveillance data: California laboratories report SARS-CoV-2 test results to CDPH through electronic laboratory reporting. Los Angeles County SARS-CoV-2 lab data has a 7-day reporting lag. Test positivity is calculated using SARS-CoV-2 lab tests that has a specimen collection date reported during a given week.

Laboratory surveillance for influenza, respiratory syncytial virus (RSV), and other respiratory viruses (parainfluenza types 1-4, human metapneumovirus, non-SARS-CoV-2 coronaviruses, adenovirus, enterovirus/rhinovirus) involves the use of data from clinical sentinel laboratories (hospital, academic or private) located throughout California. Specimens for testing are collected from patients in healthcare settings and do not reflect all testing for influenza, respiratory syncytial virus, and other respiratory viruses in California. These laboratories report the number of laboratory-confirmed influenza, respiratory syncytial virus, and other respiratory virus detections and isolations, and the total number of specimens tested by virus type on a weekly basis.

Test positivity for a given week is calculated by dividing the number of positive COVID-19, influenza, RSV, or other respiratory virus results by the total number of specimens tested for that virus. Weekly laboratory surveillance data are defined as Sunday through Saturday.

Hospitalization data: Data on COVID-19 and influenza hospital admissions are from Centers for Disease Control and Prevention’s (CDC) National Healthcare Safety Network (NHSN) Hospitalization dataset. The requirement to report COVID-19 and influenza-associated hospitalizations was effective November 1, 2024. CDPH pulls NHSN data from the CDC on the Wednesday prior to the publication of the report. Results may differ depending on which day data are pulled. Admission rates are calculated using population estimates from the P-3: Complete State and County Projections Dataset provided by the State of California Department of Finance (https://dof.ca.gov/forecasting/demographics/projections/). Reported weekly admission rates for the entire season use the population estimates for the year the season started. For more information on NHSN data including the protocol and data collection information, see the CDC NHSN webpage (https://www.cdc.gov/nhsn/index.html).

CDPH collaborates with Northern California Kaiser Permanente (NCKP) to monitor trends in RSV admissions. The percentage of RSV admissions is calculated by dividing the number of RSV-related admissions by the total number of admissions during the same period. Admissions for pregnancy, labor and delivery, birth, and outpatient procedures are not included in total number of admissions. These admissions serve as a proxy for RSV activity and do not necessarily represent laboratory confirmed hospitalizations for RSV infections; NCKP members are not representative of all Californians.

Weekly hospitalization data are defined as Sunday through Saturday.

Death certificate data: CDPH receives weekly year-to-date dynamic data on deaths occurring in California from the CDPH Center for Health Statistics and Informatics. These data are limited to deaths occurring among California residents and are analyzed to identify influenza, respiratory syncytial virus, and COVID-19-coded deaths. These deaths are not necessarily laboratory-confirmed and are an underestimate of all influenza, respiratory syncytial virus, and COVID-19-associated deaths in California. Weekly death data are defined as Sunday through Saturday.

Wastewater data: This dataset represents statewide weekly SARS-CoV-2 wastewater summary values. SARS-CoV-2 wastewater concentrations from all sites in California are combined into a single, statewide, unit-less summary value for each week, using a method for data transformation and aggregation developed by the CDC National Wastewater Surveillance System (NWSS). Please see the CDC NWSS data methods page for a description of how these summary values are calculated. Weekly wastewater data are defined as Sunday through Saturday.
Organization: State of California
Last updated: 2025-07-23T19:43:38.783377
Tags: adenovirus, california-department-of-public-health, coronavirus, covid, covid-19, deaths, enterovirus, flu, flu-season, hmpv, hospital-admissions, hospitalization, human-metapneumovirus, influenza, laboratory, parainfluenza, respiratory-syncytial-virus, rhinovirus, rsv, test-positivity, testing, wasterwater

Tables

Age Distribution Of COVID-19, Flu And...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.age_distribution_of_covid_19_flu_and

3.58 KB
15 rows
4 columns


CREATE TABLE age_distribution_of_covid_19_flu_and (
  "season" VARCHAR,
  "agegrp" VARCHAR,
  "respiratory_virus" VARCHAR,
  "count" BIGINT
);

Aggregated SARS-CoV-2 RNA Wastewater Concentrations

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.aggregated_sars_cov_2_rna_wastewater_concentrations

5.89 KB
161 rows
3 columns


CREATE TABLE aggregated_sars_cov_2_rna_wastewater_concentrations (
  "season" VARCHAR,
  "weekending" TIMESTAMP,
  "sars_conc" DOUBLE
);

COVID-19-associated Hospitalization Rates From NHSN

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.covid_19_associated_hospitalization_rates_from_nhsn

4.01 KB
14 rows
4 columns


CREATE TABLE covid_19_associated_hospitalization_rates_from_nhsn (
  "weekending" TIMESTAMP,
  "season" VARCHAR,
  "mmwr_week" BIGINT,
  "covid_weekly_rate" DOUBLE
);

Data Dictionary - Age Distribution Of COVID-19, Flu And...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.data_dictionary_age_distribution_of_covid_19_flu_and

5.33 KB
4 rows
4 columns


CREATE TABLE data_dictionary_age_distribution_of_covid_19_flu_and (
  "column" VARCHAR,
  "type" VARCHAR,
  "label" VARCHAR,
  "description" VARCHAR
);

Data Dictionary - Percentage Of Deaths Attributed To RSV In...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.data_dictionary_percentage_of_deaths_attributed_to_rsv_in

7.03 KB
3 rows
4 columns


CREATE TABLE data_dictionary_percentage_of_deaths_attributed_to_rsv_in (
  "column" VARCHAR,
  "type" VARCHAR,
  "label" VARCHAR,
  "description" VARCHAR
);

Data Dictionary - Percentage Of Other Respiratory Pathogen...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.data_dictionary_percentage_of_other_respiratory_pathogen

7.82 KB
3 rows
4 columns


CREATE TABLE data_dictionary_percentage_of_other_respiratory_pathogen (
  "column" VARCHAR,
  "type" VARCHAR,
  "label" VARCHAR,
  "description" VARCHAR
);

Data Dictionary - Percentage Of RSV Admissions At Kaiser...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.data_dictionary_percentage_of_rsv_admissions_at_kaiser

8.88 KB
3 rows
4 columns


CREATE TABLE data_dictionary_percentage_of_rsv_admissions_at_kaiser (
  "column" VARCHAR,
  "type" VARCHAR,
  "label" VARCHAR,
  "description" VARCHAR
);

Data Dictionary - Percentage Of RSV Detections At Clinical...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.data_dictionary_percentage_of_rsv_detections_at_clinical

7.74 KB
3 rows
4 columns


CREATE TABLE data_dictionary_percentage_of_rsv_detections_at_clinical (
  "column" VARCHAR,
  "type" VARCHAR,
  "label" VARCHAR,
  "description" VARCHAR
);

Influenza-associated Hospitalization Rates From NHSN

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.influenza_associated_hospitalization_rates_from_nhsn

4 KB
14 rows
4 columns


CREATE TABLE influenza_associated_hospitalization_rates_from_nhsn (
  "weekending" TIMESTAMP,
  "season" VARCHAR,
  "mmwr_week" BIGINT,
  "flu_weekly_rate" DOUBLE
);

Data Dictionary - Aggregated SARS-CoV-2 RNA Wastewater Concentrations

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.n__dictionary_aggregated_sars_cov_2_rna_wastewater_con_472df1e5

5.17 KB
3 rows
4 columns


CREATE TABLE n__dictionary_aggregated_sars_cov_2_rna_wastewater_con_472df1e5 (
  "column" VARCHAR,
  "type" VARCHAR,
  "label" VARCHAR,
  "description" VARCHAR
);

Data Dictionary - COVID-19-associated Hospitalization Rates From NHSN

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.n__dictionary_covid_19_associated_hospitalization_rate_845a6b96

6.03 KB
4 rows
4 columns


CREATE TABLE n__dictionary_covid_19_associated_hospitalization_rate_845a6b96 (
  "column" VARCHAR,
  "type" VARCHAR,
  "label" VARCHAR,
  "description" VARCHAR
);

Data Dictionary - Influenza-associated Hospitalization Rates From NHSN

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.n__dictionary_influenza_associated_hospitalization_rat_cf1447c1

6.03 KB
4 rows
4 columns


CREATE TABLE n__dictionary_influenza_associated_hospitalization_rat_cf1447c1 (
  "column" VARCHAR,
  "type" VARCHAR,
  "label" VARCHAR,
  "description" VARCHAR
);

Data Dictionary - Percentage Of Deaths Attributed To COVID-19 In...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.n__dictionary_percentage_of_deaths_attributed_to_covid_19_in

5.76 KB
3 rows
4 columns


CREATE TABLE n__dictionary_percentage_of_deaths_attributed_to_covid_19_in (
  "column" VARCHAR,
  "type" VARCHAR,
  "label" VARCHAR,
  "description" VARCHAR
);

Data Dictionary - Percentage Of Deaths Attributed To Influenza...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.n__dictionary_percentage_of_deaths_attributed_to_influenza

6.98 KB
3 rows
4 columns


CREATE TABLE n__dictionary_percentage_of_deaths_attributed_to_influenza (
  "column" VARCHAR,
  "type" VARCHAR,
  "label" VARCHAR,
  "description" VARCHAR
);

Data Dictionary - Percentage Of Influenza Detections At Clinical...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.n__dictionary_percentage_of_influenza_detections_at_clinical

7.66 KB
3 rows
4 columns


CREATE TABLE n__dictionary_percentage_of_influenza_detections_at_clinical (
  "column" VARCHAR,
  "type" VARCHAR,
  "label" VARCHAR,
  "description" VARCHAR
);

Data Dictionary - Percentage Of SARS-CoV-2 Detections From Test...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.n__dictionary_percentage_of_sars_cov_2_detections_from_test

5.67 KB
3 rows
4 columns


CREATE TABLE n__dictionary_percentage_of_sars_cov_2_detections_from_test (
  "column" VARCHAR,
  "type" VARCHAR,
  "label" VARCHAR,
  "description" VARCHAR
);

Percentage Of Deaths Attributed To COVID-19 In...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.percentage_of_deaths_attributed_to_covid_19_in

5.86 KB
156 rows
3 columns


CREATE TABLE percentage_of_deaths_attributed_to_covid_19_in (
  "season" VARCHAR,
  "weekending" TIMESTAMP,
  "percovcodeddeaths" DOUBLE
);

Percentage Of Deaths Attributed To Influenza...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.percentage_of_deaths_attributed_to_influenza

5.8 KB
156 rows
3 columns


CREATE TABLE percentage_of_deaths_attributed_to_influenza (
  "season" VARCHAR,
  "weekending" TIMESTAMP,
  "perflucodeddeaths" DOUBLE
);

Percentage Of Deaths Attributed To RSV In...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.percentage_of_deaths_attributed_to_rsv_in

5.5 KB
156 rows
3 columns


CREATE TABLE percentage_of_deaths_attributed_to_rsv_in (
  "season" VARCHAR,
  "weekending" TIMESTAMP,
  "perrsvcodeddeaths" DOUBLE
);

Percentage Of Influenza Detections At Clinical...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.percentage_of_influenza_detections_at_clinical

5.77 KB
156 rows
3 columns


CREATE TABLE percentage_of_influenza_detections_at_clinical (
  "season" VARCHAR,
  "weekending" TIMESTAMP,
  "perflu" DOUBLE
);

Percentage Of Other Respiratory Pathogen...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.percentage_of_other_respiratory_pathogen

5.97 KB
260 rows
3 columns


CREATE TABLE percentage_of_other_respiratory_pathogen (
  "virus" VARCHAR,
  "weekending" TIMESTAMP,
  "percent" DOUBLE
);

Percentage Of RSV Admissions At Kaiser...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.percentage_of_rsv_admissions_at_kaiser

5.75 KB
156 rows
3 columns


CREATE TABLE percentage_of_rsv_admissions_at_kaiser (
  "season" VARCHAR,
  "weekending" TIMESTAMP,
  "rsvper_tot" DOUBLE
);

Percentage Of RSV Detections At Clinical...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.percentage_of_rsv_detections_at_clinical

5.77 KB
156 rows
3 columns


CREATE TABLE percentage_of_rsv_detections_at_clinical (
  "season" VARCHAR,
  "weekending" TIMESTAMP,
  "perrsv" DOUBLE
);

Percentage Of SARS-CoV-2 Detections From Test...

@usgov.ca_gov_respiratory_virus_weekly_report_b5321.percentage_of_sars_cov_2_detections_from_test

5.81 KB
156 rows
3 columns


CREATE TABLE percentage_of_sars_cov_2_detections_from_test (
  "season" VARCHAR,
  "weekending" TIMESTAMP,
  "percovsars" DOUBLE
);