climate change is occurring as a result of warming of the earth’s atmosphere due to human activity generating excess amounts of greenhouse gases. because of its potential impact on the hydrologic cycle and severe weather events, climate change is expected to have an enormous effect on human health, including on the burden and distribution of many infectious diseases. the infectious diseases tha...

conclusions according to the results of the study, the most common causes of hospital admission were respiratory infections (e.g. pneumonia), nervous system infections, tuberculosis, septicemia, skin and soft tissue infections and utis. considering the diversity of infections, epidemiological evaluation of these diseases is essential, especially in regions with high prevalence of infectious dis...

background: bio aerosols include airborne micro-organisms such as bacteria, fungi, viruses, etc and their products. exposure to a bio aerosol is linked with a broad spectrum of health problems, including infectious diseases, acute toxic effects, allergies, and cancer. the aim of this study was to evaluate the quality and quantity of bio aerosols found in the air of different wards in valiasr ho...

The main purpose of this paper has been to discuss the effects of psychological stress and other environmental factors on incidence of diseases. We were specifically concerned with stress that increased susceptibility of uninfected hosts when exposed to infection. If such stresses also reduced resources, fecundity and/or survivorship, there was a reduction in the host carrying capacity. In addi...

needlestick injuries in the health care workers of urmia   educational hospitals   r. nejadrahim [1] , n. gharahughi [2] , m. sistanizade [3]     abstract:   introduction: needlestick, injuries and probable acquisition of blood born pathogens such as hbv, hcv and hiv/aids are some occupational hazards that threaten the health of' the health care workers. considering this important issue, t...

background and aims: the objective of this study was to investigate the effects of newcastle disease and infectious bronchitis vaccination programs in chickens. materials and methods and results: in the present study, 225 day-old broiler chicks divided into 5 groups. the groups were submitted to vaccinations, except for the non-vaccinated control group. the chickens in the groups 1 were kept as...

since the mid-19 th century, human activities have increased greenhouse gases such as carbon dioxide, methane, and nitrous oxide in the earth's atmosphere that resulted in increased average temperature. the effects of rising temperature include soil degradation, loss of productivity of agricultural land, desertification, loss of biodiversity, degradation of ecosystems, reduced fresh-water resou...