نتایج جستجو برای: disease transmission
تعداد نتایج: 1699388 فیلتر نتایج به سال:
Background & Objectives: Hepatitis B is a primary viral infection of the liver, which could be transferred through saliva and blood. Hepatitis B is highly transmissible therefore, this study aimed to evaluate the awareness about this disease among dental students of Mazandaran University of Medical Sciences in 2012-2013. Materials and Methods: This cross-sectional study was conducted on al...
Background: Primary infection with the BK virus occurs in the tonsils and is transmitted to other tissues and organs, especially the kidneys, by infecting monocytes. Infection with this virus is rarely associated with clinical disease but reactivating the virus in people who have a suppressed immune system can cause kidney or bladder damage. Due to the importance of activating the BK virus in s...
In this paper, we develop a mathematical model to examine the transmission dynamics of curable malaria, curable mTB and non-curable HIV/AIDS and their co-infection. The size of population has been taken as varying due to the emigration of susceptible population. The total population is divided into five subclasses as susceptible, malaria infected, mTB infected, HIV infection and AIDS by assumin...
context crimean-congo hemorrhagic fever (cchf) is a tick-borne viral disease with a mortality rate of 30% to 80% and reported from more than 30 countries in asia, africa, south-eastern europe, and the middle east. it is a zoonotic viral disease and an important health problem. in endemic areas, livestock handlers, livestock market workers, skin processors, veterinary staff, farmers, and healthc...
Background and Aim: Water and food born diseases are one of the important causes of morbidity and mortality in through the world. The objective of this study was to investigate factors affecting the persistence of diarrheal cases after the explosive epidemic phase of diarrheal disease in Yazd province. Materials and Methods: We designed a match case control study that was performed on base ...
Hospital-acquired infection (HAI) is an important public health issue with unacceptable levels of morbidity and mortality, over the last 5 years. Disease can be transmitted by air (over large distances), by direct/indirect contact or a combination of both routes. While contact transmission of disease forms the majority of HAI cases, transmission through the air is harder to control, but one whe...
background hepatitis c virus (hcv) is a major cause of chronic liver disease worldwide. the role of intra familial hcv transmission is still controversial. the aim of the present study is to determine intra familial transmission (sexual and non sexual contacts) of hcv in a group of iranian population. patients and methods in this historical cohort study, 270 first degree relatives of hepatitis ...
While past work has often examined the effects of transmission mode on virulence evolution in parasites, few studies have explored the impact of horizontal transmission on the evolution of benefits conferred by a symbiont to its host. Here, we identify three mechanisms that create a positive covariance between horizontal transmission and symbiont-provided benefits: pleiotropy within the symbion...
Human type 1 T-cell lymphotropic virus (HTLV-1) infection has been described in many areas of the world, including Caribbean countries, Japan, Africa, Oceania and South America. In this review we define the endemicity of HTLV-1 in the country proposing four epidemiological criteria. Then we discuss the core subject of the review, which is the vertical transmission of HTLV-1. This mechanism is o...
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