Management of water quality has been applied mainly to receiving waters contaminated by point sources of human pollution. Waters affected by point sources of pollution are usually subject to regulation, because the pollution frequently impacts bathing beaches or shellfish harvesting waters, as well as drinking-water supplies. Water resources contaminated by dispersed, unidentified sources of po...

A growing number of enteric protozoan species are considered to have zoonotic potential. Their clinical impact varies and in many cases is poorly defined. Similarly, the epidemiology of infections, particularly the role of non-human hosts, requires further study. In this review, new information on the life cycles and transmission of Giardia, Cryptosporidium, Entamoeba, Blastocystis and Balantid...

To the Editor: Recent reports from Afghanistan have focused on the current status of war-and refugee-related anthroponotic cutaneous leishmaniasis (ACL), caused by Leishmania tropica, in Kabul City, refugee camps, and Fayzabad City (Badakhshan Province) (1–4). In central Asia, ACL is transmitted mainly by the sandfly Phlebotomus sergenti in urban or peri-urban environments (5). Zoonotic cutaneo...

background: microsporidia species are obligatory intracellular agents that can in­fect all major animal groups including mammals, birds, fishes and insects. whereas world­wide human infection reports are increasing, the cognition of sources of infec­tion particularly zoonotic transmission could be helpful. we aimed to detect zoono­tic microsporidia spore in fecal samples from some animals with ...

background: interest in tatera indica rodent arises mostly because it is believed that this species is survived among four subspecies reported from iran, two of which exist in khuzestan province. in addition, it might has a role as res­ervoir hosts of zoonotic cutaneous leishmaniasis in the transmission of leishmania major in some of the widespread asian foci including southwestern iran. method...

background: zoonotic   cutaneous leishmaniasis (zcl) is an increasing health problems in many rural areas of iran. the aim of this study was to introduce a new alternative rodenticide to control the reservoirs of zcl, its effect on the vector density and the incidence of the disease in hyperendemic focus of esfa­han county, central iran. methods: the study was carried out from january 2011 to j...

We aimed to estimate the global occurrence of zoonotic tuberculosis (TB) caused by Mycobacterium bovis or M. caprae infections in humans by performing a multilingual, systematic review and analysis of relevant scientific literature of the last 2 decades. Although information from many parts of the world was not available, data from 61 countries suggested a low global disease incidence. In regio...

Leishmaniasis has a long history in the Islamic Republic of Iran. This study aimed to show the trend in leishmaniasis incidence from 1983 to 2012 and to describe the epidemiological characteristics in 2012. In a retrospective cross-sectional study, data were extracted from th%e national leishmaniasis surveillance system for the 3 clinical types-cutaneous (zoonotic and anthroponotic) and viscera...

Impacts of environmental changes on zoonotic disease risk are the subject of speculation, but lack a coherent framework for understanding environmental drivers of pathogen transmission from animal hosts to humans. We review how environmental factors affect the distributions of zoonotic agents and their transmission to humans, exploring the roles they play in zoonotic systems. We demonstrate the...

The zoonotic introduction of an animal pathogen into the human population and the subsequent extension or alteration of its host range leading to the successful maintenance of the corresponding pathogen by human-to-human transmission pose a serious risk for world-wide health care. Such a scenario occurred for instance by the introduction of simian immunodeficiency viruses into the human populat...