J Travel Med 2003; 10:306–308. Tuberculosis, one of the oldest diseases known to humankind, continues to be a significant problem in the third millennium.Worldwide, it remains the leading cause of death by a single infectious disease.1,2 Factors responsible for the resurgence of tuberculosis in the low-endemicity countries of Europe and the US include the presence of HIV infection, immigration ...

iran contains 36 named endemic reptile species in 17 genera and seven families. the most endemic and speciose family is the gekkonidae, followed by the lacertidae. these two families collectively dominate with 22 species (or 60.1%) of the total endemic herpetofauna. twenty one endemics are known only from a single location or restricted area within a single physiographic region. an analysis of ...

In this work we consider a spatially distributed periodic multi strain SIS epidemic model. We let susceptible and infected individuals migrate between patches, with periodic migration rates. Considering that migrations are much faster than the epidemic process, we build up a less dimensional (aggregated) system that allows to study some features of the asymptotic behavior of the original model....

The efficiency of malaria transmission between human and mosquito has been shown to be influenced by many factors in the laboratory, although their impact in the field and how this changes with disease endemicity are unknown. Here we estimate how human-mosquito transmission changed as malaria was controlled in Dielmo, Senegal. Mathematical models were fit to data collected between 1990 and the ...

В статье представлен анализ территориального распределения лептоспироза в наиболее эндемичных зонах Одесской области. Установлено, что очень высокая заболеваемость лептоспирозом наблюдалась на территории Савранского района, с превышением среднего многолетнего уровня десятки раз. период сезонного по-дъема, который продолжался июля по сентябрь, происходило 97,73 % всех случаев заболевания.