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RestoredCDC URL: http://restoredcdc.org/www.cdc.gov/rsv/php/surveillance/index.html
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RestoredCDC URL: http://restoredcdc.org/www.cdc.gov/rsv/php/surveillance/index.html
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Original site: www.cdc.gov/rsv/php/surveillance/index.html | RestoredCDC.org is an independent project, not affiliated with CDC or any federal entity. Visit CDC.gov for free official information. Due to archival on January 6, 2025, recent outbreak data is unavailable. Videos are not restored. Access data.restoredcdc.org for restored data. Use of this site implies acceptance of this disclaimer.[More]About Us Report Bug Compare ContentSkip directly to site content Skip directly to search Skip directly to On This PageAn official website of the United States governmentHere's how you knowOfficial websites use .govA .gov website belongs to an official government organization in the United States.Secure .gov websites use HTTPSA lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.Respiratory Syncytial Virus Infection (RSV)Explore TopicsSearchSearchClear InputFor Everyone* About* How It Spreads* Vaccines* Symptoms* RSV in Infants and Young Children* RSV in Older Adults* View allHealth Care Providers* Clinical Guidance* Vaccine Guidance* View allPublic Health* Surveillance* RSV in Alaska Native Infants* References and Resources* View allRelated Topics:Respiratory Virus GuidanceView Allsearch close searchsearchRSV Menu CloseRSV MenusearchFor Everyone* About* How It Spreads* Vaccines* Symptoms* RSV in Infants and Young Children* RSV in Older Adults* View All HomeHealth Care Providers* Clinical Guidance* Vaccine Guidance* View AllPublic Health* Surveillance* RSV in Alaska Native Infants* References and Resources* View AllRelated Topics* Respiratory Virus GuidanceView All RSVSurveillance RSV in Alaska Native Infants References and Resources View AllAugust 30, 2024EspañolSurveillance of RSVWhat to know* CDC maintains multiple systems to monitor respiratory diseases, including RSV, across the United States.* RSV season typically begins in the fall, peaks in the winter, and ends in the spring in most of the United States.Surveillance and research systemsCDC has several systems that focus on monitoring and describing seasonal trends, clinical risk factors, rates of illness and hospitalization, and demographics of patients seeking care for illness associated with respiratory syncytial virus (RSV).* The National Respiratory and Enteric Virus Surveillance System (NREVSS) is a laboratory-based system that monitors seasons and circulation patterns of RSV and other viruses.* The National Syndromic Surveillance Program (NSSP) is a collaboration among CDC, federal partners, state and local health departments, and academic and private sector partners to collect, analyze, and share electronic data received from emergency departments and other health care settings.* The RSV Hospitalization Surveillance Network (RSV-NET) is a population-based surveillance system for RSV-associated hospitalizations in the U.S. among children and adults.* The New Vaccine Surveillance Network (NVSN) is a multisite, active, population-based pediatric surveillance network for acute respiratory hospitalizations and outpatient visits associated with RSV and other respiratory pathogens.* The Investigating Respiratory Viruses in the Acutely Ill (IVY) Network is a multisite, active surveillance network designed to assess how well vaccines work to prevent COVID-19, flu, and RSV-associated hospitalizations among adults.* The RSV Surveillance in Native American Persons (RSV SuNA) collaboration monitors for RSV-associated hospitalizations and outpatient visits among Alaska Native and American Indian persons and is conducted on the Navajo Nation, White Mountain Apache Tribal Lands, and in Alaska. Additional information about other research and surveillance activities among Alaska Native persons may be provided by the Arctic Investigations Program.RSV burden estimatesEach year in the United States, RSV leads to approximately:* 2.1 million outpatient (non-hospitalization) visits among children younger than 5 years old.* 58,000–80,000 hospitalizations among children younger than 5 years old.* 100,000–150,000 hospitalizations among adults 60 years and older.RSV seasonal trendsHow are data collected?CDC collects RSV laboratory test results performed in the United States using the National Respiratory and Enteric Virus Surveillance System (NREVSS). CDC analyzes data on RSV activity at the national, regional, and state levels. NREVSS is a voluntary, laboratory-based surveillance system established in the 1980s to monitor seasonal trends of several viruses, including RSV. Through NREVSS, participating laboratories report the total number of weekly RSV tests performed to detect the virus and the number of those tests that were positive. Data from NREVSS provide information to public health officials and healthcare providers about the presence of RSV in their communities.What are the typical seasonal patterns?In most regions of the United States and other areas with similar climates, the RSV season typically starts during the fall and peaks in the winter. Based on data from before the COVID-19 pandemic (2014 to 2017), in all 10 U.S. Department of Health and Human Services (HHS) regions, except Florida and Hawaii, these patterns were observed:* RSV season onset (indicated by a sustained increase in the percent positivity of RSV tests above a threshold) ranged from mid-September to mid-November.* RSV season peak (indicated by the maximum in percent positivity of RSV tests) ranged from late December to mid-February.* RSV season offset (indicated by a sustained decrease in the percent positivity of RSV tests below a threshold) ranged from mid-April to mid-May.Florida has an earlier RSV season onset and longer duration than most regions of the country.On This Page* Surveillance and research systems* RSV burden estimates* RSV seasonal trendsRelated PagesRSV-NETRelated Pages** RSV-NET* Preliminary Estimates of RSV Burden for 2024-2025* How CDC Estimates the Burden of RSV in the US** RSV in Alaska Native Infants* References and Resources*View All RSVRSV-NETBack to TopAugust 30, 2024Sources Print ShareFacebook LinkedIn Twitter SyndicateContent Source:National Center for Immunization and Respiratory Diseases; Coronavirus and Other Respiratory Viruses DivisionRelated PagesRSV-NETRelated Pages** RSV-NET* Preliminary Estimates of RSV Burden for 2024-2025* How CDC Estimates the Burden of RSV in the US** RSV in Alaska Native Infants* References and Resources*View All RSVBack to TopRSVRespiratory syncytial virus (RSV) usually causes mild, cold-like symptoms in most people, but it is the leading cause of infant hospitalization in the U.S.View AllFor Everyone* About* How It Spreads* Vaccines* Symptoms* RSV in Infants and Young Children* RSV in Older AdultsHealth Care Providers* Clinical Guidance* Vaccine GuidancePublic Health* Surveillance* RSV in Alaska Native Infants* References and ResourcesSign up for Email UpdatesContact UsContact Us* Call 800-232-4636* Contact CDCAbout CDCAbout CDC* Pressroom* Organization* Budget & Funding* Careers & JobsPolicies* Accessibility* External Links* Privacy* Web Policies* FOIA* OIG* No Fear Act* Nondiscrimination* Vulnerability Disclosure PolicyLanguagesLanguages* EspañolLanguage Assistance* Español* 繁體中文* Tiếng Việt* 한국어* Tagalog* Русский* العربية* Kreyòl Ayisyen* Français* Polski* Português* Italiano* Deutsch* 日本語* فارسی* EnglishArchive* CDC Archive* Public Health PublicationsContact UsContact Us* Call 800-232-4636* Contact CDCAbout CDC* Pressroom* Organization* Budget & Funding* Careers & Jobs* About CDCPolicies* Accessibility* External Links* Privacy* Web Policies* FOIA* OIG* No Fear Act* Nondiscrimination* Vulnerability Disclosure PolicyLanguagesLanguages* EspañolLanguage Assistance* Español* 繁體中文* Tiếng Việt* 한국어* Tagalog* Русский* العربية* Kreyòl Ayisyen* Français* Polski* Português* Italiano* Deutsch* 日本語* فارسی* EnglishArchive* CDC Archive* Public Health PublicationsHHS.gov USA.gov
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