H Ostadimoghaddam, Aa Yekta, J Heravian, A Azimi, Mj , Khoshsima, M Khaje Daluee, M Pedramfar, A Javaherforoshzadeh, S Aliakbari, M Hashemi Nejad, P Razavi Shandiz, S Golmohammadi, Z Haeri Kermani, M Khabazkhoob,
Volume 6, Issue 4 (3-2011)
Abstract
Background & Objectives: To determine the prevalence rates of refractive errors in Mashhad, Iran
Methods: In this population-based study, random cluster sampling was performed on the urban population of Mashhad and of 4453 selected individuals, 70.4% participated in the study. Refractive errors were assessed using cycloplegic refraction in participants who were ≤ 15 years of age and non-cycloplegic refraction in those who were > 15 years of age .
Results: The prevalence of myopia and hyperopia in individuals ≤ 15 years old was 3.64% (95% CI: 5.09 to 2.19) and 27.4% (95% CI: 31.09 to 23.72), respectively. The same measurements for individuals >15 years of age was 22.36% (95% CI: 24.66 to 20.06) and 34.21% (95 CI: 36.85 to 31.57), respectively. The prevalence of astigmatism and anisometropia were 25.64% and 5.84, respectively. Astigmatism and anisometropia were significantly more (p=0.005) and less (p=0.048) prevalent in females, respectively. Anisometropia, astigmatism and hyperopia were found to be increased with age.
Conclusions: This study highlighted the valuable information on refractive errors in Mashhad. Hyperopia was the most common refractive error. In addition to subjects who were between 5 to 15 years of age, refractive errors were also prevalent among older people therefore, more attention should be paid to the correction of refractive errors in these groups.
S Bokaie, M Soltani, A Rahimi Forushani, A Bahonar, M Afshar Nasab, S Rohani Zadeh, A Ghajari, D Saadati,
Volume 8, Issue 1 (7-2012)
Abstract
Background & Objectives: White spot, as one of the infectious viral diseases, has made severe losses in
shrimp ponds all over the world. Despite extensive efforts made to deal with
and control the disease, white spot continues to be a major health problem in
shrimp farms across Iran. In this work, the significance of the risk factors of
white spot disease epidemic occurred in shrimp ponds of Choubdeh farming site
in Khuzestan province of Iran is determined.
Methods: A cross sectional study was conducted from June 1, 2010, to
September 22, 2010 in 223 shrimp ponds of the site. Data was collected on 17
variables, thought to be associated with the occurrence and epidemic of white
spot, with the aid of the shrimp ponds owners and fisheries and veterinary
organizations. The occurrence of white spot disease in the farming site was
determined by clinical symptoms and the results of conventional PCR tests. the
effectiveness of the risk factors was established by odds ratio (OR).
Results: It is found that poor management of birds fighting (OR=3.72),
less educated farm foreman
(OR= 3.29) and poor filtration of the intake water (OR= 3.43) are significantly
affected the occurrence of the disease while little changes in the salinity of
shrimp ponds (OR= 0.16) decreases the odds of the disease.
Conclusion: These
findings help better develop shrimp farming across Iran, especially in
Khuzestan province.
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S Bokaie, F Ansari, Sm Peighambari, M Mahmoudi, Mh Fallah , F Tehrani, A Rajab, Sa Ghafouri , Smm Tabatabaei, M Shabani,
Volume 12, Issue 2 (8-2016)
Abstract
Background and Objectives: Salmonella contamination of broiler breeder farms is of great importance regarding transmission of the bacteria through the production chain of poultry meat. The aim of this study was to determine the prevalence and management related factors of Salmonella contamination in broiler breeder flocks in Iran.
Methods: This cross sectional study was carried out between 2013 and 2014 in 23 provinces of Iran. Fecal samples were obtained from 139 broiler breeder farms and were subjected to standard bacteriological tests for Salmonella isolation. The serogroups of isolated Salmonella were determined using standard serological tests. Relevant information of sampled holdings was acquired from the GIS system and used for risk factor detection.
Results: The prevalence of Salmonella contamination in broiler breeder holdings was 7.9% and the more positive samples were from Tehran and Fars provinces. The flock age (P = 0.019) and the number of poultry houses in the farm (P = 0.037) were major risk factors of Salmonella contamination in broiler breeder farms.
Conclusion: This investigation showed that the prevalence of Salmonella contamination in broiler breeder farms was relatively high. It is necessary to establish an appropriate program for controlling Salmonella contamination in broiler breeder farms. Regular sampling for early detection of contaminated farms would be very important in this case. Sampling from old flocks should be the first priority.
