Most people with west nile virus infection are asymptomatic, or have a mild illness such as fever, headache, stiff neck, nausea, vomiting, muscle weakness, and alteration in the level of consciousness. West nile is transmitted to a person through the bite of an infected mosquito. West nile fever is a disease caused by west nile virus wnv, which is a flavivirus related to the viruses. West nile virus surveillance report week ending august 17. West nile virus national surveillance report english edition september 4, 2011 to september 10, 2011 week 36 qc6 1 mb6 sk6 ab6 1 unclassified unspecified 1 01 0 0 0 0 0 23 0 0 0 0 note.
West nile virus activity was detected the week of july 14, 2012 in one mosquito pool, confirmed by pcr, from washington county. At the time, there was no federal funding to directly support state and local surveillance for mosquitoborne illness and, consequently, there was no. Surveillance for human west nile virus diseaseunited states, 19992008. Cases of wnv occur during mosquito season, which starts in the summer and continues through fall. Conditions designated as notifiable at the national level during 2020.
West nile virus and other mosquitoborne disease national surveillance report july 31 to august 6, 2016 week 31 alternative formats download the pdf version of this document 330 kb. Zoonotic disease program po box 47825 olympia, washington 98504 7825. The european surveillance system tessy is a system for the collection, analysis and dissemination of data on communicable diseases. West nile virus is now endemic throughout the contiguous united states, with 16. West nile virus in new york city wiley online library. It is most commonly spread to people by the bite of an infected mosquito. Equine clinical cases regulated reporting to animal health authorities. West nile virus national report on dead bird surveillance. West nile virus surveillance in washington summary report. European surveillance for west nile virus in mosquito populations. Early federal government assessment reports were explicit on this.
How do i view different file formats pdf, doc, ppt, mpeg on this site. West nile summary report utah department of health. During 2005, 252 human cases of west nile virus wnv disease including 12 wnv deaths were reported in illinois. The introduction of west nile virus wnv to the western hemisphere resulted in a human epidemic in new york city during 1999. Division of health informatics and surveillance dhis national notifiable diseases surveillance system nndss. As west nile virus wnv spread and became established across the united states following its first.
The number of human cases observed in 2018 represents the highest number of cases reported in each of the preceding five seasons 20 2017 figure 3. Health care providers and laboratories should report to the patients local public health department. This indicator looks at the incidence of west nile virus disease in the united. Activity was detected from july through october, with wnv activity being detected in most surveillance measures horse, mosquito by august. A new government intervention plan was adopted in early 20 to protect public health against west nile virus wnv infection, since wnv infection epidemiological activity had resumed in quebec in 2011 and 20121. Information and resources for public health and healthcare professionals on west nile virus wnv. West nile virus, national surveillance report final report for 20 pdf version 225 kb 12 pages help with pdf documents. Cdcs case definitions through the national notifiable diseases surveillance. Due to the recent positive west nile virus pools detected in the state there has been a lot of discussion about dead birds. To obtain copies or for additional information, please contact. West nile virus human cases, 2019 and 20032018 as with horses, human infections are seasonal and are often not detected until later in the season.
State and local health departments report weekly case counts for west nile virus disease cases following. Wnv surveillance in humans, june 2 2019 to the week ending july 27 2019. There is no specific treatment for west nile virus. During the 2018 transmission season surveillance week 20 to 50, 431 human cases of west nile virus were reported to the public health agency of canada.
West nile virus, national surveillance report final report. Clinical disease ranges from mild febrile illness to severe encephalitis. The table includes total number of cases reported in the united states, by region and by states, in accordance with the current method of displaying mmwr data. By 2002, wnv had spread to 44 states and the district of columbia, with a total of 4,156 human cases of infection reported by the centers for disease control and prevention cdc. West nile virus risk assessment tool ecdc europa eu. As of surveillance week 28, ending on july 15, 2017, the public health agency of canada phac has not been officially informed of any human cases of west nile virus by provinces and territories since the beginning of the 2017 season in canada. West nile virus and other mosquitoborne diseases national surveillance report november 26 to december 9, 2017 week 48 and 49 alternative formats pdf version 975 kb. In this table, provisional cases of selected notifiable diseases.
West nile virus wnv is a mosquitoborne infectious disease, transmitted to humans through. Aug 30, 2016 engler o, savini g, papa a, figuerola j, groschup mh, kampen h, et al. Dec 16, 2019 for 2018, eleven eueea member states reported 1 605 west nile virus wnv infections, of which 1 548 96% were locally acquired. The majority of locally acquired cases were reported by italy, greece and romania, representing 39%, 20%. West nile virus national surveillance report english edition july 24, 2011 to july 30, 2011 week 30 qc6 1 mb6 sk6 ab6 1 unclassified unspecified 1 01 0 0 0 0 0 23 0 0 0 0 note. West nile virus national surveillance report english edition. Final cumulative maps and data west nile virus cdc. Abstract in this article we use the case of the west nile virus wnv to investigate the. The key to the health departments planning efforts is a primary emphasis on prevention. Eu countries report outbreaks of wnv encephalomyelitis in horses to the.
This disease is best prevented by avoiding exposure to mosquitoes. Aer 2018 west nile virus infection european centre for. National center for emerging and zoonotic infectious diseases, centers for. Case counts reflect cases completed by local health departments at the time of reporting. All 56 jurisdictions conducted surveillance for human wnv disease in 2012. Humans during surveillance weeks 4950, ending on dec 19, 2015, no human cases of west nile virus were reported to the public health agency of canada the agency. During surveillance week 35, ending on september 1, 2018, the public health agency of canada was informed of three additional west nile virus wnv infections. There are no vaccines to prevent or medications to treat wnv in people. Guidelines for surveillance, prevention, and control. West nile virus is a category ii reportable condition in wisconsin.
As early as 2003, an integrated surveillance system was set up to detect the presence of wnv activity and to establish procedures to prevent the human complications and mortality associated with wnv infection. Pdf since its introduction in north america in 1999, west nile virus has produced. West nile virus and other mosquitoborne disease national. Department of health and human services public health service centers for disease control and prevention national center for emerging and zoonotic infectious diseases division of vectorborne diseases fort collins, colorado 4th revision june 14, 20. West nile virus disease surveillance epidemiology program. Arbonet is a national arboviral surveillance system managed by cdc and state health departments.
Includes disease information, the purpose of reporting and surveillance, legal reporting requirements, and resources such as case definition, reporting form, surveillance and reporting guideline, and more. National highlights west nile virus neuroinvasive disease incidence maps present data reported by state and local health departments to cdcs arbonet surveillance system. The majority of locally acquired cases were reported by italy, greece and romania, representing 39%, 20% and 18% of eu cases respectively. Figure 1 shows the incidence of human neuroinvasive disease i. United states national surveillance data were gathered from the. Because new york city had ceased active mosquito surveillance and control in the late.
Most west nile virus wnv infections are asymptomatic. Guidelines for surveillance, prevention, and control adobe pdf file cdc pdf pdf 69 pages. Key facts for 2018, eleven eueea member states reported 1 605 west nile virus wnv infections, of which 1 548 96% were locally acquired. Mosquito surveillance and other environmental risk indicators provide a more timely indication of risk. West nile virus wnv is the leading cause of mosquitoborne disease in the continental united states. In quebec, the first cases of west nile virus wnv infection were identified in 2002. Electronically, through the wisconsin electronic disease surveillance system wedss. West nile virus and other mosquitoborne diseases national. This is the highest number of human cases and deaths reported.
Wnv surveillance in humans, june 2 2019 to the week ending august 19 2019. The majority of surveillance measures began in june 2012. West nile virus neuroinvasive disease incidence by state united states 2018 as of november, 2018 this map shows the incidence of human west nile virus neuroinvasive disease e. By mail or fax using an arbovirus infection followup form, f031 pdf. West nile virus surveillance, brazil, 20082010 article pdf available in transactions of the royal society of tropical medicine and hygiene 10711 september 20 with 447 reads. Compared with 2004, they were less likely to have an active component to human surveillance 16 of 56 29% versus 28 of 55 51% and were less likely to report contacting neurologists 29 of 54 54% versus 35 of 54 65% or infectious disease specialists 34 of 54 63% versus 46 of 55 84%. For readers interested in the pdf version, the document is available for downloading or viewing.
In 1999 an exotic mosquitoborne virus, west nile virus wnv, was recognized for the first time in the us, causing an outbreak of meningoencephalitis in people and a largescale dieoff in birds. National capacity for surveillance, prevention, and control. West nile virus national surveillance report english edition july 10, 2011 to july 16, 2011 week 28 qc6 1 mb6 sk6 ab6 1 unclassified unspecified 1 01 0 0 0 0 0 23 0 0 0 0 note. Enhancing west nile virus surveillance, united states. At national level, human surveillance activities include the. West nile virus, national surveillance report final. Fiveyear report on the states west nile virus environmental surveillance activities and findings.
West nile virus neuroinvasive disease incidence by county. West nile virus infection annual epidemiological report for. West nile virus and other nationally notifiable arboviral. Fact sheet west nile virus eng whoeurope world health. West nile virus washington state department of health. Council of state and territorial epidemiologists assessment. Guidelines for surveillance, prevention, and control u. The nyc department of health routinely analyzes surveillance and control data from previous years in order to better prepare for the upcoming mosquito season. West nile fever annual epidemiological report 2016 2014 data. West nile virus national surveillance report english edition july 17, 2011 to july 23, 2011 week 29 qc6 1 mb6 sk6 ab6 1 unclassified unspecified 1 01 0 0 0 0 0 23 0 0 0 0 note. For the purposes of surveillance and reporting, based on clinical presentation, wnv disease cases are categorized into two primary groups. Surveillance of west nile virus infection in europe. West nile virus is now endemic throughout the contiguous united states, with 16,196 human neuroinvasive disease cases and 1549 deaths reported since 1999. West nile virus and other mosquitoborne diseases national surveillance report.
961 1659 976 935 489 1459 648 1115 878 1301 1610 957 865 66 1493 1471 359 1214 1547 784 1312 1564 590 400 469 924 383 1646 529 904 1638 1628 1625 1019 699 1380 43 301 298 356 1286 255 1013 1314 1170