{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,8]],"date-time":"2026-01-08T20:50:19Z","timestamp":1767905419220,"version":"3.49.0"},"reference-count":24,"publisher":"Centers for Disease Control and Prevention (CDC)","issue":"11","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Emerg. Infect. Dis."],"published-print":{"date-parts":[[2025,11]]},"DOI":"10.3201\/eid3111.250907","type":"journal-article","created":{"date-parts":[[2026,1,8]],"date-time":"2026-01-08T16:31:11Z","timestamp":1767889871000},"source":"Crossref","is-referenced-by-count":0,"title":["Community-Driven, Text Message\u2013Based COVID-19 Surveillance System, Los Angeles County, California, USA, 2020\u20132024"],"prefix":"10.3201","volume":"31","author":[{"given":"Jordan B.","family":"Braunfeld","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elizabeth","family":"Traub","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Howard","family":"Chiou","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aryana T.","family":"Amoon","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christina","family":"Collins","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Allison","family":"Joyce","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Justin","family":"Buendia","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Prabhu","family":"Gounder","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Annabelle","family":"de St. Maurice","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1822","reference":[{"key":"key-10.3201\/eid3111.250907-202511260951-R1","unstructured":"Order E. N-33-20. March 19, 2020 [cited 2024 Dec 30]. https:\/\/www.gov.ca.gov\/wp-content\/uploads\/2020\/03\/EO-N-33-20-COVID-19-HEALTH-ORDER-03.19.2020-002.pdf"},{"key":"key-10.3201\/eid3111.250907-202511260951-R2","doi-asserted-by":"publisher","first-page":"650","DOI":"10.1016\/j.annemergmed.2023.07.024","article-title":"Emergency department volume, severity, and crowding since the onset of the coronavirus disease 2019 pandemic.","volume":"82","author":"Oskvarek","year":"2023","journal-title":"Ann Emerg Med"},{"key":"key-10.3201\/eid3111.250907-202511260951-R3","unstructured":"Los Angeles County DPH Health Advisory. COVID-19 guidance\u2014optimizing N95 supplies and managing mild illness. March 4, 2020 [cited 2024 Dec 30]. http:\/\/publichealth.lacounty.gov\/eprp\/lahan\/alerts\/LAHANVCOVID030420.pdf"},{"key":"key-10.3201\/eid3111.250907-202511260951-R4","doi-asserted-by":"publisher","first-page":"28","DOI":"10.1016\/j.epidem.2015.05.001","article-title":"Ten-year performance of Influenzanet: ILI time series, risks, vaccine effects, and care-seeking behaviour.","volume":"13","author":"van Noort","year":"2015","journal-title":"Epidemics"},{"key":"key-10.3201\/eid3111.250907-202511260951-R5","doi-asserted-by":"publisher","first-page":"17","DOI":"10.1111\/1469-0691.12477","article-title":"Web-based participatory surveillance of infectious diseases: the Influenzanet participatory surveillance experience.","volume":"20","author":"Paolotti","year":"2014","journal-title":"Clin Microbiol Infect"},{"key":"key-10.3201\/eid3111.250907-202511260951-R6","doi-asserted-by":"publisher","first-page":"2124","DOI":"10.2105\/AJPH.2015.302696","article-title":"Flu near you: crowdsourced symptom reporting spanning 2 influenza seasons.","volume":"105","author":"Smolinski","year":"2015","journal-title":"Am J Public Health"},{"key":"key-10.3201\/eid3111.250907-202511260951-R7","unstructured":"Outbreaks Near Me. Who we are [cited 2024 Dec 30]. https:\/\/outbreaksnearme.org\/us\/en-US\/who-we-are"},{"key":"key-10.3201\/eid3111.250907-202511260951-R8","unstructured":"Council of State and Territorial Epidemiologists. Standardized surveillance case definition and national notification for 2019 novel coronavirus disease (COVID-19) [cited 2024 Dec 30]. https:\/\/cdn.ymaws.com\/www.cste.org\/resource\/resmgr\/2020ps\/Interim-20-ID-01_COVID-19.pdf"},{"key":"key-10.3201\/eid3111.250907-202511260951-R9","unstructured":"Centers for Disease Control and Prevention. MMWR weeks. 2013 [cited 2025 May 16]. https:\/\/stacks.cdc.gov\/view\/cdc\/22305"},{"key":"key-10.3201\/eid3111.250907-202511260951-R10","unstructured":"RESPWatch | LA County DPH. Technical notes [cited 2024 Dec 30]. http:\/\/publichealth.lacounty.gov\/acd\/respwatch\/index.htm#TechnicalNotes"},{"key":"key-10.3201\/eid3111.250907-202511260951-R11","unstructured":"County of Los Angeles, Internal Services Department, Information Technology Services, Geographic Information Systems Section. Los Angeles County population estimates (July 1, 2022) [cited 2024 Dec 30]. http:\/\/www.publichealth.lacounty.gov\/epi\/docs\/2022-LAC-Population-8RE.pdf"},{"key":"key-10.3201\/eid3111.250907-202511260951-R12","unstructured":"Sunquest Public Health. Los Angeles County department of public health integrated reporting, investigation, and surveillance system (IRIS) and virtual confidentiality morbidity report (vCMR) [cited 2024 Dec 30]. http:\/\/dashboard.publichealth.lacounty.gov\/covid19_surveillance_dashboard"},{"key":"key-10.3201\/eid3111.250907-202511260951-R13","doi-asserted-by":"publisher","first-page":"1141","DOI":"10.1038\/s41597-024-03969-8","article-title":"Human pathogen nucleic acids in wastewater solids from 191 wastewater treatment plants in the United States.","volume":"11","author":"Boehm","year":"2024","journal-title":"Sci Data"},{"key":"key-10.3201\/eid3111.250907-202511260951-R14","unstructured":"Wastewater SCAN. About the dashboard [cited 2024 Dec 30]. https:\/\/data.wastewaterscan.org\/about"},{"key":"key-10.3201\/eid3111.250907-202511260951-R15","doi-asserted-by":"publisher","first-page":"693","DOI":"10.1016\/S0140-6736(22)00982-5","article-title":"Influenza.","volume":"400","author":"Uyeki","year":"2022","journal-title":"Lancet"},{"key":"key-10.3201\/eid3111.250907-202511260951-R16","doi-asserted-by":"publisher","first-page":"1939","DOI":"10.1016\/j.jiph.2020.09.022","article-title":"Trajectories of symptoms and healthcare use following respiratory tract infections in rural Anhui, China:a cross-sectional study.","volume":"13","author":"Wu","year":"2020","journal-title":"J Infect Public Health"},{"key":"key-10.3201\/eid3111.250907-202511260951-R17","doi-asserted-by":"publisher","first-page":"S404","DOI":"10.1093\/infdis\/jiw375","article-title":"Epidemic forecasting is messier than weather forecasting: the role of human behavior and internet data streams in epidemic forecast.","volume":"214","author":"Moran","year":"2016","journal-title":"J Infect Dis"},{"key":"key-10.3201\/eid3111.250907-202511260951-R18","doi-asserted-by":"publisher","first-page":"238","DOI":"10.1186\/s12879-017-2337-5","article-title":"Disease severity determines health-seeking behaviour amongst individuals with influenza-like illness in an internet-based cohort.","volume":"17","author":"Peppa","year":"2017","journal-title":"BMC Infect Dis"},{"key":"key-10.3201\/eid3111.250907-202511260951-R19","doi-asserted-by":"publisher","first-page":"499","DOI":"10.1111\/irv.12753","article-title":"Active surveillance documents rates of clinical care seeking due to respiratory illness.","volume":"14","author":"Galanti","year":"2020","journal-title":"Influenza Other Respir Viruses"},{"key":"key-10.3201\/eid3111.250907-202511260951-R20","doi-asserted-by":"publisher","first-page":"e00181920","DOI":"10.1590\/0102-311x00181920","article-title":"Health care seeking due to COVID-19 related symptoms and health care cancellations among older Brazilian adults: the ELSI-COVID-19 initiative.","volume":"36","author":"Macinko","year":"2020","journal-title":"Cad Saude Publica"},{"key":"key-10.3201\/eid3111.250907-202511260951-R21","doi-asserted-by":"publisher","first-page":"100527","DOI":"10.1016\/j.epidem.2021.100527","article-title":"Optimizing COVID-19 control with asymptomatic surveillance testing in a university environment.","volume":"37","author":"Brook","year":"2021","journal-title":"Epidemics"},{"key":"key-10.3201\/eid3111.250907-202511260951-R22","doi-asserted-by":"publisher","first-page":"277","DOI":"10.1016\/j.amjsurg.2020.09.005","article-title":"How resilient is your team? Exploring healthcare providers\u2019 well-being during the COVID-19 pandemic.","volume":"221","author":"Huffman","year":"2021","journal-title":"Am J Surg"},{"key":"key-10.3201\/eid3111.250907-202511260951-R23","doi-asserted-by":"publisher","first-page":"e0267766","DOI":"10.1371\/journal.pone.0267766","article-title":"A mixed methods study evaluating acceptability of a daily COVID-19 testing regimen with a mobile-app connected, at-home, rapid antigen test: Implications for current and future pandemics.","volume":"17","author":"Nguyen","year":"2022","journal-title":"PLoS One"},{"key":"key-10.3201\/eid3111.250907-202511260951-R24","doi-asserted-by":"publisher","first-page":"100614","DOI":"10.1016\/j.lanepe.2023.100614","article-title":"Attitudes towards booster, testing and isolation, and their impact on COVID-19 response in winter 2022\/2023 in France, Belgium, and Italy: a cross-sectional survey and modelling study.","volume":"28","author":"de Meijere","year":"2023","journal-title":"Lancet Reg Health Eur"}],"container-title":["Emerging Infectious Diseases"],"original-title":[],"deposited":{"date-parts":[[2026,1,8]],"date-time":"2026-01-08T16:31:12Z","timestamp":1767889872000},"score":1,"resource":{"primary":{"URL":"https:\/\/wwwnc.cdc.gov\/eid\/article\/31\/11\/25-0907_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,11]]},"references-count":24,"journal-issue":{"issue":"11","published-print":{"date-parts":[[2025,11]]}},"URL":"https:\/\/doi.org\/10.3201\/eid3111.250907","relation":{},"ISSN":["1080-6040","1080-6059"],"issn-type":[{"value":"1080-6040","type":"print"},{"value":"1080-6059","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,11]]}}}