toxoplasmosis is one of the most common parasitic diseases worldwide. although estimated that one third of the world's population are infected with toxoplasma gondii , but the most common form of the disease is latent (asymptomatic). on the other hand, recent findings indicated that la­tent toxoplasmosis is not only unsafe for human, but also may play various roles in the etiol­ogy of different...

BACKGROUND Namibia's HIV prevalence is 13.3%. Alcohol is associated with sexual risk-taking, leading to increased HIV risk. Baseline sexual behaviors, HIV and alcohol knowledge, and self-perceived HIV risk were examined among men reporting high-risk drinking in Katutura, Namibia. METHODS HIV negative men, ≥ 18 years, were screened for harmful or hazardous levels of drinking and >1 recent sex ...

Zambia has one of the most liberal abortion laws in sub-Saharan Africa. However, rates of unsafe abortion remain high with negative health and economic consequences. Little is known about the economic burden on women of abortion care-seeking in low income countries. The majority of studies focus on direct costs (e.g. hospital fees). This article estimates the individual-level economic burden of...

background: millions of workers are the victims of different kinds of accidents every year throughout the world. the purpose of this study was to investigate the relationships between safety attitude and occurrence of the occupational accidents. methods: this investigation was a cross-sectional study performed in a gas refinery in south of iran in 2008. sample size of this study was 176 people....

STPA (System-Theoretic Process Analysis) is a new, more powerful hazard analysis technique that assumes accidents are caused by inadequate enforcement of constraints on component behavior rather than simply component failures (ref. 3). Accidents in complex systems are often caused by unsafe interactions among components that have not failed. Because STPA includes both component failure accident...