| weekly update: west nile virus activity--united states, july 17-23, 2002. | this report summarizes west nile virus (wnv) surveillance data reported to cdc through arbonet and verified by states and other jurisdictions as of july 23, 2002. during the reporting week of july 17-23, nine human cases of wnv were reported from two states (louisiana and mississippi). during the same period, wnv infections were reported in 202 dead crows, 48 other dead birds, 13 horses, and 69 mosquito pools. | 2002 | 12186223 |
| mosquito and arbovirus activity during 1997-2002 in a wetland in northeastern mississippi. | the species composition and population dynamics of adult mosquitoes in a wetland near iuka, ms, were analyzed over a 6-yr period (1997-2002) and reverse transcription-polymerase chain reaction (pcr) detection rates of arboviruses determined during five of those years. blood meals of three likely vector species were identified using a pcr-based method that allows identification of the host to species. culex erraticus (dyar & knab) composed 51.9% of the population during the 6-yr period with 295 f ... | 2004 | 15185956 |
| west nile virus activity--united states, august 4-10, 2004. | during august 4-10, a total of 89 cases of human west nile virus (wnv) illness were reported from 14 states (alabama, arizona, california, florida, illinois, kentucky, louisiana, minnesota, mississippi, missouri, new mexico, north dakota, south dakota, and wyoming). | 2004 | 15306758 |
| west nile virus activity--united states, august 11-17, 2004. | during august 11-17, a total of 194 cases of human west nile virus (wnv) illness were reported from 17 states (alabama, arizona, california, colorado, florida, illinois, louisiana, maryland, minnesota, mississippi, missouri, new mexico, ohio, south dakota, texas, utah, and virginia). | 2004 | 15318160 |
| west nile virus activity--united states, august 18-24, 2004. | during august 18-24, a total of 154 cases of human west nile virus (wnv) illness were reported from 18 states (alabama, arizona, california, colorado, connecticut, florida, georgia, illinois, kentucky, minnesota, mississippi, missouri, nevada, new mexico, north carolina, south dakota, tennessee, and wisconsin). | 2004 | 15329654 |
| west nile virus activity--united states, september 15-21, 2004. | during september 15-21, a total of 218 cases of human west nile virus (wnv) illness were reported from 21 states (arizona, california, florida, illinois, indiana, kansas, maryland, michigan, minnesota, mississippi, missouri, nebraska, nevada, new mexico, north dakota, oklahoma, south dakota, texas, utah, wisconsin, and wyoming). | 2004 | 15385920 |
| west nile virus activity--united states, september 22-28, 2004. | during september 22-28, a total of 180 cases of human west nile virus (wnv) illness were reported in the district of columbia (dc) and 24 states (alabama, arizona, california, georgia, illinois, iowa, kansas, kentucky, louisiana, maryland, michigan, minnesota, mississippi, missouri, montana, nebraska, nevada, new mexico, ohio, pennsylvania, texas, utah, wisconsin, and wyoming). | 2004 | 15457147 |
| west nile virus activity--united states, october 13-19, 2004. | during october 13-19, a total of 200 cases of human west nile virus (wnv) illness were reported from 20 states (arizona, arkansas, california, colorado, illinois, indiana, iowa, kansas, maryland, michigan, mississippi, missouri, nevada, new mexico, north carolina, oklahoma, pennsylvania, south dakota, wisconsin, and wyoming). | 2004 | 15499683 |
| west nile virus activity--united states, october 20-26, 2004. | during october 20-26, a total of 80 cases of human west nile virus (wnv) illness were reported from 16 states (arizona, california, florida, iowa, kentucky, louisiana, michigan, mississippi, missouri, montana, nebraska, new york, ohio, south dakota, texas, and utah). | 2004 | 15514584 |
| west nile virus activity--united states, january 1-august 15, 2006. | this report summarizes west nile virus (wnv) surveillance data reported to cdc through arbonet as of 3 a.m. mountain daylight time, august 15, 2006. a total of 26 states had reported 388 cases of human wnv illness to cdc. a total of 214 (56%) cases for which such data were available occurred in males; median age of patients was 49 years (range: 2-91 years). dates of illness onset ranged from january 6 to august 10; a total of 13 cases were fatal. a total of 68 presumptive west nile viremic blood ... | 2006 | 16915222 |
| effect of hurricane katrina on arboviral disease transmission. | | 2007 | 17953117 |
| west nile virus neuroinvasive disease incidence in the united states, 2002-2006. | as the geographic range of reported human west nile virus (wnv) disease has expanded across the united states, seasonal transmission and outbreaks have persisted over several years in many areas of the country. west nile virus neuroinvasive disease (wnnd) case reports from 2002 to 2006 were reviewed to determine which areas of the country have the highest reported cumulative incidence and whether those areas have had consistently high annual incidence. during the 5-year period examined, 9632 cas ... | 2008 | 18237264 |
| increase in west nile neuroinvasive disease after hurricane katrina. | after hurricane katrina, the number of reported cases of west nile neuroinvasive disease (wnnd) sharply increased in the hurricane-affected regions of louisiana and mississippi. in 2006, a >2-fold increase in wnnd incidence was observed in the hurricane-affected areas than in previous years. | 2008 | 18439367 |
| spatio-temporal cluster analysis of county-based human west nile virus incidence in the continental united states. | west nile virus (wnv) is a vector-borne illness that can severely affect human health. after introduction on the east coast in 1999, the virus quickly spread and became established across the continental united states. however, there have been significant variations in levels of human wnv incidence spatially and temporally. in order to quantify these variations, we used kulldorff's spatial scan statistic and anselin's local moran's i statistic to uncover spatial clustering of human wnv incidence ... | 2009 | 19594928 |
| dry weather induces outbreaks of human west nile virus infections. | since its first occurrence in the new york city area during 1999, west nile virus (wnv) has spread rapidly across north america and has become a major public health concern in north america. by 2002, wnv was reported in 40 states and the district of columbia with 4,156 human and 14,539 equine cases of infection. mississippi had the highest human incidence rate of wnv during the 2002 epidemic in the united states. epidemics of wnv can impose enormous impacts on local economies. therefore, it is a ... | 2010 | 20181272 |
| west nile virus activity - united states, 2009. | west nile virus (wnv) was first detected in the western hemisphere in 1999 in new york city and has since caused seasonal epidemics of febrile illness and neurologic disease across the united states, where it is now the leading cause of arboviral encephalitis. this report updates a previous report and summarizes wnv activity in the united states reported to cdc in 2009. a total of 38 states and the district of columbia (dc) reported 720 cases of wnv disease. of these, 33 states and dc reported 3 ... | 2010 | 20592686 |
| the culex pipiens complex in the mississippi river basin: identification, distribution, and bloodmeal hosts. | members of the culex pipiens complex are the primary vectors of st. louis encephalitis virus and west nile virus in the mississippi river basin (mrb). the cx. pipiens complex in the mrb is composed of 4 taxa: cx. p. pipiens form pipiens, cx. p. quinquefasciatus, hybrids between cx. p. pipiens f. pipiens and cx. p. quinquefasciatus, and cx. p. pipiens form molestus. three studies on bloodmeal hosts with large sample sizes have been conducted on members of the cx. pipiens complex in the mrb includ ... | 2012 | 23401948 |
| culex flavivirus and west nile virus in culex quinquefasciatus populations in the southeastern united states. | little is known of the interactions between insect-only flaviviruses and other arboviruses in their mosquito hosts, or the potential public health significance of these associations. the specific aims of this study were to describe the geographic distribution, prevalence, and seasonal infection rates of culex flavivirus (cxfv) and west nile virus (wnv) in culex quinquefasciatus say in the southeastern united states, investigate the potential association between cxfv and wnv prevalence in cx. qui ... | 2012 | 22308785 |
| avian gis models signal human risk for west nile virus in mississippi. | west nile virus (wnv) poses a significant health risk for residents of mississippi. physicians and state health officials are interested in new and efficient methods for monitoring disease spread and predicting future outbreaks. geographic information systems (gis) models have the potential to support these efforts. environmental conditions favorable for mosquito habitat were modeled using gis to derive wnv risk maps for mississippi. variables important to wnv dissemination were selected and cla ... | 2006 | 16945154 |
| west nile virus. | | 2005 | 15960183 |
| combining the benefits of decision science and financial analysis in public health management: a county-specific budgeting and planning model. | state public health agencies are charged with providing and overseeing the management of basic public health services on a population-wide basis. these activities have a re-emphasized focus as a result of the events of september 11, 2001, the subsequent anthrax events, and the continuing importance placed on bioterrorism preparedness, west nile virus, and emerging infectious diseases (eg, monkeypox, sars). this has added to the tension that exists in budgeting and planning, given the diverse con ... | 2004 | 15552764 |
| spinal cord neuropathology in human west nile virus infection. | during the 1999 new york city west nile virus (wnv) outbreak, 4 patients with profound muscle weakness, attributed to guillain-barré syndrome, were autopsied. these cases were the first deaths caused by wnv, a flavivirus, to be reported in the united states. the patients' brains had signs of mild viral encephalitis; spinal cords were not examined. during the 2002 national epidemic, several patients in mississippi had acute flaccid paralysis. electrophysiologic studies localized the lesions to th ... | 2004 | 15086282 |
| from the centers for disease control and prevention. acute flaccid paralysis syndrome associated with west nile virus infection--mississippi and louisiana, july-august 2002. | | 2002 | 12377069 |
| acute flaccid paralysis syndrome associated with west nile virus infection--mississippi and louisiana, july-august 2002. | west nile virus (wnv) infection can cause severe, potentially fatal neurologic illnesses including encephalitis and meningitis. acute wnv infection also has been associated with acute flaccid paralysis (afp) attributed to a peripheral demyelinating process (guillain-barré syndrome [gbs]), or to an anterior myelitis. however, the exact etiology of afp has not been assessed thoroughly with electrophysiologic, laboratory, and neuroimaging data. this report describes six cases of wnv-associated afp ... | 2002 | 12353741 |
| west nile virus activity--united states, august 8-14, 2002, and mississippi, july 1-august 14, 2002. | this report summarizes west nile virus (wnv) surveillance data reported to cdc through arbonet and by states and other jurisdictions as of august 14, 2002. | 2002 | 12206287 |
| abundance and diversity of mosquito species collected from a rural area of central mississippi: implications for west nile virus transmission in mississippi. | to determine abundance and seasonality of potential west nile virus (wnv) mosquito vectors in a forested area of central mississippi, mosquitoes were collected weekly from a wildlife management area located approximately 10 mi from a local urban area known to have numerous human wnv cases. we were particularly interested in the presence or absence of culex quinquefasciatus, the primary vector of wnv in mississippi, although other culex species were assayed. two centers for disease control and pr ... | 2015 | 26181696 |
| effects of weather and landscape on the equine west nile virus infection risk in mississippi, usa. | the west nile virus (wnv) continues to be a public health concern in north america. dry weather appears to increase human wnv infection risks, but it is uncertain whether dry weather conditions exert similar effects on the corresponding equine wnv infection. this study assessed the effects of precipitation of the previous year and land cover diversity on the equine wnv risk of mississippi, usa, at the county level in the year 2002 using bayesian hierarchical models. the risk estimated for 2002 w ... | 2015 | 26618313 |