نتایج جستجو برای: endemicity
تعداد نتایج: 2164 فیلتر نتایج به سال:
We examined the patelliform snails of the subfamily Lancinae, endemic to northwestern North America, to test whether morphological variation correlated with genetic and anatomical differences. Molecular analyses using cox1, 16S, calmodulin intron, and 28S rDNA partial sequences and anatomical data supported recognition of four species in three genera. The relationships of lancines within Lymnae...
Radiolucent lesions of the vertebrae, especially the cervical vertebrae are commonly encountered by the orthopedic surgeons and neurosurgeons dealing with spinal column disorders. Considering the unavailability of highly sophisticated and reliable facilities to reach the exact diagnosis before starting appropriate therapy. Trial of medical therapy is suggested to be worthy before attempting for...
The quantification of malaria transmission for the classification of malaria risk has long been a concern for epidemiologists. During the era of the Global Malaria Eradication Programme, measurements of malaria endemicity were institutionalised by their incorporation into rules outlining defined action points for malaria control programmes. We review the historical development of these indices ...
The Ross-Macdonald Model We use the following simple version of the Ross-Macdonald model. The parameters are described in Box #1. For a longer explanation, see [1]. The change in the PR, the prevalence of infection, is given by the equation: ˙ X = mabZ(1 − X) − rX (1) The change in the sporozoite rate, the fraction of the mosquitoes with sporozoites in their salivary glands, is modeled using th...
Technical Appendix Table 1. Prevalence and intensity of Opisthorchis viverrini fluke metacercariae in fish collected in several districts of Phu Yen province,Vietnam Fish species Collection site district/ commune Prevalence, % (No. infected/total no. examined) Infection intensity (metacercariae/fish) Type of water body Other zoonotic metacercaria infections* Crucian carp (Carasius auratus) *No ...
BACKGROUND Plasmodium vivax imposes substantial morbidity and mortality burdens in endemic zones. Detailed understanding of the contemporary spatial distribution of this parasite is needed to combat it. We used model based geostatistics (MBG) techniques to generate a contemporary map of risk of Plasmodium vivax malaria in Indonesia in 2010. METHODS Plasmodium vivax Annual Parasite Incidence d...
BACKGROUND Hepatitis A (HAV) and E (HEV) viruses are responsible for enterically transmitted hepatitis. Tunisia is reported to be of intermediate endemicity for HAV and of low seroprevalence for HEV; however, data from rural areas of South Tunisia are lacking. METHODS Sera from 216 asymptomatic pregnant women and from 92 patients with acute hepatitis were collected between October 2014 and No...
Scrub typhus, caused by Orientia tsutsugamushi, has emerged recently in areas of northern China where the disease had not been known to exist. We analyzed epidemiological, clinical, and laboratory data for 104 patients who were admitted to a hospital in Fuyang City between 26 September and 1 November 2008. We showed that the major clinical manifestations of the patients were fever (100%), heada...
Dengue is the most important human arboviral disease and a global public health concern throughout tropical/subtropical regions. About 50--100,000,000 people contracted dengue worldwide and 500,000 had the severe form with hospitalization. The mosquito Aedes aegypti transmits four virus serotypes, whose simultaneous movement has determined the hyper endemicity of dengue. Symptoms include rapid ...
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