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PubMed1994

Developmental abnormalities of the gonad and abnormal sex hormone concentrations in juvenile alligators from contaminated and control lakes in Florida.

The reproductive development of alligators from a contaminated and a control lake in central Florida was examined. Lake Apopka is adjacent to an EPA Superfund site, listed due to an extensive spill of dicofol and DDT or its metabolites. These compounds can act as estrogens. Contaminants in the lake also have been derived from extensive agricultural activities around the lake that continue today and a sewage treatment facility associated with the city of Winter Garden, Florida. We examined the hypothesis that an estrogenic contaminant has caused the current failure in recruitment of alligators on Lake Apopka. Supporting data include the following: At 6 months of age, female alligators from Lake Apopka had plasma estradiol-17 beta concentrations almost two times greater than normal females from the control lake, Lake Woodruff. The Apopka females exhibited abnormal ovarian morphology with large numbers of polyovular follicles and polynuclear oocytes. Male juvenile alligators had significantly depressed plasma testosterone concentrations comparable to levels observed in normal Lake Woodruff females but more than three times lower than normal Lake Woodruff males. Additionally, males from Lake Apopka had poorly organized testes and abnormally small phalli. The differences between lakes and sexes in plasma hormone concentrations of juvenile alligators remain even after stimulation with luteinizing hormone. Our data suggest that the gonads of juveniles from Lake Apopka have been permanently modified in ovo, so that normal steroidogenesis is not possible, and thus normal sexual maturation is unlikely.

Alligators and Crocodiles↗
PubMed2003

Assessing the effects of substance abuse among applicants for TANF benefits: the outcome of a demonstration project in Florida.

This paper examines an attempt by the State of Florida to devise a mechanism for determining the level of drug use among TANF recipients and to determine the extent to which such use affects employment, earnings and use of government services by TANF beneficiaries. Data from tests administered by substance abuse testing providers were combined with information from Medicaid, Food Stamp, cash assistance and Unemployment Insurance files to examine differences between the two groups. The findings suggest that the procedures employed by the State of Florida did not produce reliable estimates of the level of drug use among TANF beneficiaries. The data did show very small differences in employment, earnings, and use of government services between individuals who tested positively and those who tested negatively for substance abuse. In addition, evidence is presented that suggests that there is very little difference in employment, earnings and use of government services between users of different kinds of drugs.

Employment↗
PubMed2000

An analysis of injury deaths on Florida farms for years 1989 through 1998.

The purpose of this study was to analyze injury deaths on Florida farms for years 1989 through 1998. A review of death certificates was undertaken for children, 0 to 17 years, and adults, ages 18 and older. There were a total of 231 injury deaths during this time period. Twenty deaths were in children and 211 deaths were in adults. The leading cause of death was machinery for both children and adults. Farmworkers between the ages of 60 to 89 were more likely to die of tractor deaths than other adult age groups. In addition, adult males were more likely to die on Florida farms than adult females, however, females were more likely to die as a result of a homicide. This study begins the injury related surveillance efforts of the Deep South Agricultural Health and Safety Center.

Adolescent↗
PubMedDate not supplied

Use of herbs and herbal products by Hispanics in south Florida.

OBJECTIVES: To provide insight into the use of herbs by Hispanic Americans, identify specific herbal products that health care professionals should inquire about in this population, and assess information sources and expenditures. DESIGN: Cross-sectional survey. SETTING: South Florida. PARTICIPANTS: Convenience sample of 200 Hispanic adults. INTERVENTIONS: Participants completed a descriptive, self-administered survey. MAIN OUTCOME MEASURES: Specific herbs and herbal remedies use, monthly expenditures, sources of information, and attitudes and beliefs regarding herbs. RESULTS: Of the 200 surveys that were distributed, 142 were completed for a response rate of 71%. Of the respondents, 75% reported using at least one herb in the last 12 months. Women between 25 and 34 years of age were most likely to be herb users (P = .001), while men in that age group were the least likely (P = .013). Chamomile (58.5%) and aloe vera (45.3%) were used most frequently. Two frequently used herbs--linden (35.8%) and star anise (33.0%)--are ones that are generally not well known to health care professionals. Family tradition (36%) and safety (17%) were the major reasons for use of herb/herbal remedies. Participants most commonly reported spending 25 dollars or less per month for herbs and herbal products. CONCLUSION: Hispanics in south Florida reported using herbs and herbal products at a higher rate than that those reported previously for the general population of the United States. While money spent on herbs and herbal products was generally minimal, study participants had a disconcerting level of confidence in the safety and efficacy of herbal products.

Adult↗
PubMed2005

Sources and barriers to health care coverage for Haitian immigrants in Miami-Dade county, Florida.

Haitian immigrants represent one of the largest foreign-born groups in Florida. Limited information is available on the health care issues that they face. This study's objective was to identify and evaluate the sources of and barriers to health care coverage for the Haitian immigrant community of Miami-Dade County, Florida. Information was collected on demographic characteristic and health needs and access from a probability sample of county residents of Haitian origin. Chi-square and logistic regression methods were used for data analysis. Only half of the participants had any type of health coverage, including 28% with private insurance and 15% with publicly financed coverage. Education, family income, U.S. citizenship status, length of U.S. residence, and English proficiency were associated with health coverage in bivariate analysis. Gender, citizenship, family income, and length of residence were also associated with coverage in adjusted analysis. These findings suggest that this community confronts serious access challenges that may negatively affect the health outcomes of Haitians in the U.S.

Adolescent↗
PubMed2006

Examining the adoption of electronic health records and personal digital assistants by family physicians in Florida.

PURPOSE: The purpose of this paper is to comprehensively characterise the current use of electronic health records (EHRs) and personal digital assistants (PDAs) among family physicians in Florida; and to compare family physicians with other doctors with respect to the functions commonly used on their EHR and PDA systems. METHODS: A postal survey was sent to family physicians (n=2076) and other doctors with a clear and active licence in Florida (total n=14 921). To examine factors among family physicians related to EHR and PDA use, binary logistic regression modelling techniques were utilised. Chi-square analysis was used to compare EHR and PDA functions between family physicians and other doctors. RESULTS: A total of 4203 responses, of which 756 were from family physicians, were available for the current study (28.2% overall response rate). EHR use among family physicians was significantly related to large practice size, urban location and young physician age, after controlling for confounders. Likewise, PDA usage among family physicians was independently associated with male gender and younger physician age. Additionally, even though no differences in overall EHR adoption were found, family physicians, when compared with other physicians, were significantly more likely to be using a more robust set of EHR functions. This included allergy and medication lists, diagnosis, problem lists, patient scheduling and educational materials, preventive services reminders and access to reference material. CONCLUSIONS: Even though family physicians utilise many EHR and PDA functions more commonly than other physician groups, the overall level of EHR adoption among family physicians remains low. Until more barriers to the use of EHR are minimised, the goals of the Future of Family Medicine Report to broadly implement EHR and other health IT functions will not be fully realised.

Adult↗
PubMed2003

Convergent habitat segregation of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) in southeastern Brazil and Florida.

During the rainy season of 2001, the incidence of the dengue vectors Aedes aegypti and Ae. albopictus was examined in different habitats of two cities (Rio de Janeiro and Nova Iguaçu) in Rio de Janeiro State, Brazil, and in two cities (Palm Beach and Boca Raton) in Florida. Oviposition trap collections were performed in urban, suburban, and rural habitats in both areas. Our hypothesis that the abundances and frequencies of occurrence of Ae. aegypti and Ae albopictus are affected in opposite ways by increasing urbanization was only partially supported. City, habitat, and their interaction significantly affected the abundance of both species. Cities with high abundance of Ae. aegypti also had a high abundance of Ae. albopictus. The two species were most abundant in the cities of Rio de Janeiro state and the lowest in Boca Raton. Habitat had a significant but opposite effect on the abundances of Ae. aegypti and Ae. albopictus. In general, Ae. aegypti was most prevalent in highly urbanized areas and Ae. albopictus in rural, suburban, and vegetated urban areas in Rio de Janeiro state and Florida. However, abundances of the two species were similar in most suburban areas. Analyses of frequencies of occurrence showed an unexpected high level of co-occurrence of both species in the same oviposition trap. Despite the different geographical origins of Ae. albopictus in Brazil and the United States, the habitats used by this recent invader are remarkably similar in the two countries.

Aedes↗
PubMed2002

Clinicopathologic features of suspected brevetoxicosis in double-crested cormorants (Phalacrocorax auritus) along the Florida Gulf Coast.

Outbreaks of morbidity and mortality in double-crested cormorants (Phalacrocorax auritus) along Florida's Gulf Coast have occurred sporadically for at least 30 yr. During these outbreaks, the Clinic for the Rehabilitation of Wildlife, located on Sanibel Island in Florida, has admitted a substantial number of cormorants with consistent presentation of primarily neurologic clinical signs. In order to investigate the association of these outbreaks in cormorants with exposure to brevetoxin, we compared the timing of admittance of cormorants with outbreak-specific clinical signs to blooms of the brevetoxin-producing marine algae, Karenia brevis (formerly Gymnodinium breve), around Sanibel Island from 1995 through 1999. The clinic admitted 360 out of 613 cormorants with the common clinical sign of severe cerebellar ataxia in six outbreaks occurring during this period. The ataxia was characterized by a broad-based stance, truncal incoordination, hypermetric gait, and intention tremors of the head. The histopathologic findings in 10 cormorants euthanized in 1997 were mild and nonspecific. An immunohistochemical staining technique for the detection of brevetoxin in cormorants documented the uptake of brevetoxin in tissues from four cormorants admitted during an outbreak in 1997, but a modified technique used on samples from 11 cormorants admitted during a K. brevis bloom in 2000 produced indeterminate results. Admittance of cormorants with outbreak-specific clinical signs was positively correlated (P < 0.05) with concurrent concentrations of K. brevis in local water. The cross-correlation coefficient was also significant when increased K. brevis levels preceded cormorant admittances by 2, 4, 6, and 8 wk. This delay in time between K. brevis blooms and cormorant admittance and our clinical finding of neurologic abnormalities in cormorants without overt histopathologic features suggest an association between K. brevis blooms and local cormorant morbidity.

Animals↗
PubMed2001

Seasonal prevalence of third-stage larvae of Dirofilaria immitis in mosquitoes from Florida and Louisiana.

Heads of 109,597 mosquitoes collected during 1996 and 1997 from Gainesville, Florida (1996, n = 39,131; 1997, = 34,209), Bartow, Florida (1996, n = 12,000; 1997, n = 12,000), and Baton Rouge, Louisiana (1996, n = 12,257) were tested by a polymerase chain reaction and Southern hybridization-based test for the presence of third-stage larvae of the canine heartworm Dirofilaria immitis. Mosquito heads were pooled (1-200 heads) by month, locality, and species for testing. The test used was species specific for D. immitis and was capable of detecting DNA from a single larva in a pool of 200 mosquito heads. Specificity for the third larval stage was achieved by probing only mosquito heads. One or more D. immitis-infected mosquito heads were detected in each month of the year from Barrow in both 1996 and 1997. No infected mosquito heads were detected from Gainesville or Baton Rouge in December, January, February, or March. These results are in general agreement with previous sentinel dog and model prediction studies that showed heartworm transmission in the warm temperate Gulf coast region of the United States to be seasonal rather than continuous as previously believed.

Animals↗
PubMed2001

Haemogregarine specificity in two communities of Florida snakes, with descriptions of six new species of Hepatozoon (Apicomplexa: Hepatozoidae) and a possible species of Haemogregarina (Apicomplexa: Haemogregarinidae).

Five species of snakes in Florida, from Palm Beach County in the south and Alachua County 450 km to the north, occur in similar habitat but have distinctive Hepatozoon species characteristic of each host species. In Palm Beach County, Diadophis punctatus is host to Hepatozoon punctatus n. sp., Thamnophis sauritus sackenii to Hepatozoon sauritus n. sp., and Nerodia fasciata pictiventris to Hepatozoon pictiventris n. sp. In Alachua County, N. fasciata pictiventris is parasitized by Hepatozoon fasciatae n. sp., Seminatrix p. pygaea by Hepatozoon seminatrici n. sp., and Thamnophis s. sirtalis by Hepatozoon sirtalis n. sp. Each Hepatozoon sp. has distinctive gamonts and sporogonic characters and, in the 4 species where known, meronts. Nerodia floridana is host to Haemogregarina floridana n. sp. in both localities, with generic identification tentative, based upon presence of erythrocytic meronts. The presence of sporocysts in the proboscis of 31% of Aedes aegypti infected by H. pictiventris is the first report of infective stages of a reptilian Hepatozoon species within the mouthparts of a dipteran vector. This study suggests that in Florida, at least, the diversity of the Hepatozoon community not only equals but probably exceeds the diversity of the snake communities present, and that host specificity in nature may be much greater than that postulated from previous studies.

Aedes↗
PubMed2002

Prevalence of sarcocysts in Florida black bears (Ursus americanus floridanus).

Sections of muscle from Florida black bears (Ursus americanus floridanus) collected in the state of Florida were observed for the presence of Sarcocystis sp. sarcocysts. Two of 132 (1.5%) black bears had muscle sections containing sarcocysts. One sarcocyst was observed per muscle section. The sarcocysts averaged 181.5 x 99.0 microm by light microscopy of hematoxylin and eosin-stained sections.

Animals↗
PubMed2002

Hepatozoon species (Apicomplexa: Hepatozoidae) of the corn snake, Elaphe guttata (Serpentes: Colubridae) and the pigmy rattlesnake, Sistrurus miliarius barbouri (Serpentes: Viperidae) in south Florida.

Hepatozoon guttata n. sp. is described from the corn snake (Elaphe guttata guttata) from south Florida. Gamonts average 14.6 x 4.6 (13-17 x 3.5-6) and are not recurved, with nucleus situated in the second quarter of the gamont. Erythrocyte cytoplasm rarely appears partially dehemoglobinized. The infected cells are usually distorted and are longer than the uninfected erythrocytes but do not differ in width; nuclei are smaller in length and width than those of uninfected cells. Sporogony in Aedes aegypti occurs within the head and the thorax but rarely in the abdomen. Oocysts are spherical to usually ovoid, 87.2 x 75.9 (45-155 x 40-152.5) and contain on average 7.1 (2-32) sporocysts. Sporocysts are spherical to ovoid, 34.8 x 31.0 (20-55 x 17.5-47.5), with 45.7 (14-89) sporozoites contained within. The pigmy rattlesnake (Sistrurus miliarius barbouri) in south Florida is parasitized by H. sistruri n. sp. Gamonts average 14.1 x 5.6 (12.6-15.8 x 4.7-6.3) in breadth and are not recurved, with the nucleus always situated in the second quarter of the gamont commonly at the midbody. Erythrocyte cytoplasm is not dehemoglobinized. The infected cells are always distorted and similar in length to the uninfected cells but with greater width and enlarged nuclei. Sporogony in A. aegypti occurs within head, thorax, and abdomen. Oocysts are spherical to usually ovoid, 163.6 x 154.7 (92-245 x 82-240) and contain 27.4 (12-42) sporocysts. Sporocysts are round to usually ovoid, 39.7 x 33.5 (25-50 x 20-50), with 45.7 (19-70) sporozoites.

Aedes↗
PubMed2002

Racial and ethnic identity of older adults residing in assisted living facilities in central Florida.

In response to the growing concern over the provision of long-term care to an ever-expanding older population, new methods of delivering services to older adults are constantly being developed. The development and expansion of long-term care via assisted living facilities (ALFs) is one approach that has proven surprisingly popular all across the nation. Despite the popularity of ALFs, relatively little appears to be known about the residents of these facilities. This article examines the racial and ethnic identities and certain other characteristics of residents in a stratified probability sample of assisted living facilities in central Florida, a region that contains one of the nation's densest populations of older adults. Fifty-nine facilities serving 1,805 residents were surveyed. Predictably, racial and ethnic minorities were significantly underrepresented among the residents of these facilities. Facilities serving relatively large minority populations were characterized by lower room rates and a larger proportion of beds set aside for Office of Social Services (OSS) residents (i.e., beds funded through state funds or by Medicaid). The general run of these findings suggests that as they have been implemented in central Florida, ALFs may well perpetuate preexisting socioeconomic inequalities among the aged population.

Aged↗
PubMed1980

Drug product selection: the Florida experience.

Drug product selection, the act of selecting and dispensing a lower cost generically equivalent product to that prescribed, is made possible in 46 states through recently enacted legislation. Florida's legislation is unique in that it requires pharmacists to product select under certain circumstances. This study reports on the results of a review of the Florida experience approximately one year after enactment of its drug product selection legislation. Nearly 132,000 prescriptions were sampled from 60 pharmacies during a four-month study period. This represents one per cent of all new prescriptions in the state and a three per cent sample of community pharmacies. Study results indicate that drug product selection on the average saves the consumer $1.92 per prescription. Further, under the provisions of this law the majority of cost savings (average reductions in acquisition costs between prescribed and dispensed products) are being passed along as savings to the consumer. During the four-month study period this amounted to a total prescription cost savings of nearly $425,000. Drug product selection occurs in approximately two per cent of all new prescriptions which compares favorably with results reported from other states but also suggests that additional savings can be realized under such legislation.

Cost Control↗
PubMed1985

Drug product selection: the Florida experience revisited.

The comparison of drug product selection rates determined approximately one year and four years after passage of Florida's Drug Product Selection (DPS) Law indicates very little change in the product selection and brand interchange behaviors of Florida pharmacists. Lack of adequate guidelines from the state and the liability concerns of pharmacists appeared to limit an expected increase in the state DPS rate.

Data Collection↗
PubMed2000

Failure to defend a successful state tobacco control program: policy lessons from Florida.

OBJECTIVES: This investigation sought to define policy and political factors related to the undermining of Florida's successful Tobacco Pilot Program in 1999. METHODS: Data were gathered from interviews with public health lobbyists, tobacco control advocates, and state officials; news reports; and public documents. RESULTS: As a result of a recent legal settlement with Florida, the tobacco industry agreed to fund a youth anti-smoking pilot program. The program combined community-based interventions and advertisements. In less than 1 year, the teen smoking prevalence rate dropped from 23.3% to 20.9%. The program also enjoyed high public visibility and strong public support. Nevertheless, in 1999, the state legislature cut the program's funding from $70.5 million to $38.7 million, and the Bush administration dismantled the program's administrative structure. Voluntary health agencies failed to publicly hold specific legislators and the governor responsible for the cuts. CONCLUSIONS: The legislature and administration succeeded in dismantling this highly visible and successful tobacco control program because pro-health forces limited their activities to behind-the-scenes lobbying and were unwilling to confront the politicians who made these decisions in a public forum.

Adolescent↗
PubMedDate not supplied

Spatial distribution of DDT in sediments from estuarine rivers of central Florida.

Sediments may act as both a carrier for and a potential source of contaminants such as toxic organics in aquatic environments. This study investigated the spatial distribution of the pesticide DDT [1,1, 1-trichloro-2,2-bis(p-chlorophenyl)ethane] in sediments from the Cedar and Ortega Rivers located in the lower St. Johns River basin, Florida, USA, using field measurements and three-dimensional kriging analysis. High DDT concentrations were found near the junction of the Cedar and Ortega Rivers and at the north end of the Ortega River in the upper 0.5 m of the sediments, indicating that the sediment was enriched with DDT in the top layer although use of this chlorinated compound was banned in 1972. Further study revealed that the influence of sediment grain size or texture on DDT contamination was negligible in this river system and no linear correlations existed among DDT and its metabolites such as DDD [1,1-dichloro-2,2-bis(p-chlorophenyl)ethane] and DDE [1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene]. Comparison of three-dimensional distribution of DDT content to the Florida sediment quality assessment guideline or probable effect level (PEL) showed several "hot spots" in the Ortega River sediments, where DDT contents exceeded the PEL value of 4.78 microg kg(-1). Such contamination may pose a significant hazard to aquatic life.

DDT↗
PubMed2006

Nitrogen and phosphorus status of soils and trophic state of lakes associated with forage-based beef cattle operations in Florida.

Forage-based livestock systems have been implicated as major contributors to deteriorating water quality, particularly for phosphorus (P) from commercial fertilizers and manures affecting surface and ground water quality. Little information exists regarding possible magnitudes of nutrient losses from pastures that are managed for both grazing and hay production and how these might impact adjacent bodies of water. We examined the changes that have occurred in soil fertility levels of rhizoma peanut (Arachis glabrata Benth.)-based beef cattle pastures (n = 4) in Florida from 1988 to 2002. These pastures were managed for grazing in spring followed by haying in late summer and were fertilized annually with P (39 kg P2O5 ha(-1)) and K (68 kg K2O ha(-1)). Additionally, we investigated trends in water quality parameters and trophic state index (TSI) of lakes (n = 3) associated with beef cattle operations from 1993 to 2002. Overall, there was no spatial or temporal buildup of soil P and other crop nutrients despite the annual application of fertilizers and daily in-field loading of animal waste. In fact, soil fertility levels showed a declining trend for crop nutrient levels, especially soil P (y = 146.57 - 8.14 x year; r2= 0.75), even though the fields had a history of P fertilization and the cattle were rotated into the legume fields. Our results indicate that when nutrients are not applied in excess, cow-calf systems are slight exporters of P, K, Ca, and Mg through removal of cut hay. Water quality in lakes associated with cattle production was "good" (30-46 TSI) based on the Florida Water Quality Standard. These findings indicate that properly managed livestock operations may not be major contributors to excess loads of nutrients (especially P) in surface water.

Agriculture↗