The laboratory verified cases of Crimean-Congo hemorrhagic fever (CCHF) in the piedmont steppes of the North Caucasus (Malgobeksky District, Republic of Ingushetia) are first described. The source of the first infection was Ixodidae ticks; three subsequent sources were contacts with the bloody discharges from patients. CCHF virus genome was detected in the blood of the cattle from an epidemic focus and in the pools of the Ixodes ticks Haemaphysalis parva Neum., 1897 and Boophilus annulatus Say, 1821, taken from cattle. The problem of including the piedmont steppes of the North Caucasus into the CCHF nosological area is discussed. 相似文献
Research over the past decade has provided a new understanding of genital herpes transmission and measures that can reduce transmission risk. It is unclear, however, how those affected by genital herpes access and interpret this information to make decisions about risk behaviours. This study measured how people with genital herpes and their partners perceived prevention methods, barriers and facilitating factors, and information sources. Formative evaluation was conducted, and survey data were collected from visitors to four websites (n=1849). Results suggest that the prevention messages of refraining from sex during disease outbreaks and condom use have had the greatest reach. Misconceptions about the potential role of suppressive antiviral therapy for genital herpes prevention persist among a substantial percentage of respondents. Accurate information concerning transmission between outbreaks, the effectiveness of condoms and the role of antiviral medication is critical in preventing the spread of genital herpes. 相似文献
Tissue microarrays (TMAs) are a highly efficient method for large-scale protein expression studies. To date most TMAs have been constructed using paraffin-embedded specimens. The authors developed a method that allows construction of TMAs from small numbers of cells in suspension. Spun pellets of 1x10 to 1x10 cells are directly processed and embedded in paraffin in an Eppendorf tube. Cylindrical cores of 0.6 mm are taken from these tubes and embedded in a recipient paraffin block to create a TMA. This relatively simple but versatile method enables very small numbers of cells in suspension to be analyzed using the TMA technology and allows for the study of hematolymphoid and related disorders of the blood and bone marrow for which solid tissue samples cannot be readily obtained. With the increasing trend toward obtaining small samples for screening and diagnostic purposes, this method provides a means to manipulate small volume samples for high-throughput immunohistochemical analysis. This method is also amenable for use for cultured cells. 相似文献
Amphibians, and particularly the African clawed frog Xenopus laevis, have been used for more than a century as models of vertebrate embryonic development. However, in many cases, elucidation of developmental functions of specific gene sequences could be severely impeded, because X. laevis is a tetraploid species, with multiple functional copies of many genes of interest. Recent studies have shifted focus to the West African or tropical clawed frog, X. tropicalis, the only known diploid species of the genus Xenopus. Here, we present two preliminary linkage maps, constructed by analysis of joint segregation of amplified fragment length polymorphism (AFLP) markers in a X. tropicalis interstrain hybrid. A total of 53 markers, including 51 AFLP markers and 2 isozyme markers, are presently assigned to 13 multipoint linkage groups on a map of the maternal strain, whereas 9 AFLP markers from the paternal strain are assigned to 3 linkage groups on a separate map. A dense genetic linkage map is essential in mapping new developmental mutants and determining their sequences by positional cloning. 相似文献
Maternal and Child Health Journal - Previous studies that used traditional multivariable and sibling matched analyses to investigate interpregnancy interval (IPI) and birth outcomes have reached... 相似文献
BackgroundA growing number of states are turning to managed care arrangements to provide care to senior and disabled Medicaid beneficiaries. Despite their complex care needs, very little is known about the experience of these individuals in managed care.ObjectiveTo document experiences of a sample of aged and disabled Medicaid beneficiaries receiving long-term services and supports through managed care in Iowa and to assess whether these experiences changed over time.MethodsA purposive sample of 49 aged and disabled beneficiaries enrolled in one of seven HCBS waivers in Iowa was recruited in 2017. Telephone surveys were conducted in 2017 and 2019. A conventional content analysis was used to generate themes, which were then ranked by frequency proportions. Thematic frequencies were compared across waves among repeat respondents.ResultsContent analysis yielded seven themes in the following areas: system navigation; service approvals; provider relations; customer service; case management; perception of Iowa’s transition to managed care; and oversight. Concerns with service approvals was the most frequently reported theme and within this, issues related to changes in approved services or hours and quality of newly approved services comprised the largest number of references. Beneficiary concerns appeared to grow over time among respondents participating in both survey interview waves.ConclusionThe results of this study point to serious and persistent concerns related to access and quality of care under managed care for at least some HCBS waiver participants in Iowa, underscoring the need for a comprehensive evaluation of the program. 相似文献
Despite the obstacles of limited education and employment opportunities—and the stress associated with immigration and pregnancy—Mexican immigrant women have low rates of preterm birth (PTB) compared to the US national average for all races and ethnicities. Stressors during pregnancy, and stressors associated with acculturation, may accelerate cellular aging manifested by shortened telomere length (TL) in pregnant women. Our objectives were to: (1) determine whether women with PTBs had shorter telomere lengths compared to women who had full term births; (2) assess the association of acculturation with TL and PTB.
Methods
This prospective pilot study collected data from 100 self-identified Mexican-origin pregnant women. Survey data included self-administered sociodemographic and acculturation measures and was collected from participants via paper and pen, while biologic data was collected via a single blood draw during a regularly scheduled prenatal visit between 26 and 36 weeks gestation. PTB data was collected from the participant’s medical record after delivery.
Results
TL was significantly associated with PTB; the median TL of the women with PTB was less than the median TL for the full sample (p?=?0.02). Based on regression analysis for PTB vs acculturation, we found no significant associations between acculturation and PTB or TL.
Conclusions for Practice
This study provides important evidence of the association between shortened maternal TL and adverse birth outcomes. By linking social, clinical and biologic data, we can enhance our understanding of social determinants that may affect racial and ethnic disparities in preterm birth.
While there is a fair amount of knowledge regarding substantive features of end of life care that family members desire and appreciate, we lack full understanding of the process whereby family members formulate care evaluations. In this article we draw on an analysis of interview data from 24 bereaved family members to explicate how they interpret their experiences and formulate evaluations of end of life care services. Most participants wove between expressing and legitimising dissatisfaction, and qualifying or diffusing it. This occurred through processes of comparisons against prior care experiences and expectations, personalising (drawing on personal situations and knowledge), collectivising (drawing on conversations with and observations of others) and attempting to understand causes for their negative care experiences and to attribute responsibility. The findings suggest that dissatisfaction might be diffused even where care is experienced negatively, primarily through the acknowledgement of mitigating circumstances. To a lesser extent, some participants attributed responsibility to the ‘system’ (policy and decision‐makers) and individual staff members. The findings are discussed in relation to the theoretical understanding of satisfaction and evaluation processes and how satisfaction data might inform improvements to care quality. 相似文献