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Isolation And Molecular Detection Of Salmonella Species In Milk And Milk Products

by Muhammad Umar Ijaz (2007-VA-040) | Prof. Dr. Mansur-ud-Din-Ahmad | Dr. Muhammad Hassan Mushtaq | Dr. Ali Ahmad Sheikh.

Material type: book Book; Literary form: not fiction Publisher: 2015Dissertation note: Salmonellosis is one of the emerging zoonotic diseases. Human infections result from contaminated raw or undercooked food. Various sources of contamination in milk are dirty udder, unhygienic handling and utensils, dirty hands of milkmen and poor quality water supply at the farm. To ensure food safety there is a dire need for the availability of valid, rapid and accredited diagnostic system. Conventional culture methods for detecting Salmonella spp. in foods needs 4–5 days. The development in molecular techniques made it possible to cut short the procedure. The present study was conducted with the aim to evaluate the burden of Salmonella spp. in milk and milk products. In total 150 samples were collected, out of which there were 75 milk samples. These samples were collected from farm dairy herds (pooled milk) located in Harbanspura Dairy colony, Lahore. Salmonella was detected in 8 samples (11%) by conventional method. In addition to milk samples, 75 samples of milk products were also collected from retail shops. These include 50 samples of Yogurt and 25 samples of Yogurt milk. Milk products had 6 positive samples (8%). No sample of Yogurt was detected positive for Salmonella. The reason for this is that Yogurt had only Salmonella if it is present in starter culture. Furthermore yogurt is made after frequent heating. Salmonella is killed by such continuous and vigorous heating. Yogurt milk is prepared from Yogurt along with raw milk in a separate utensil. There are chances of contamination there so it had 6 positive samples. Total 14 (9%) samples were detected in 150 samples by conventional method. It was found that Salmonella was present in raw milk samples and milk products at places where either cleanliness was not proper, milk handling practices Summary 53 were not up to the mark, udder was not washed before milking or overall management practices were poor. Positive samples obtained by conventional method were further analyzed by PCR for Salmonella genus confirmation. Out of total 8 positive milk samples by conventional method, 5(62%) were confirmed as Salmonella genus. Similarly from 6 positive samples of milk products by conventional method, only 2(33%) were confirmed as of Salmonella genus. Further PCR was conducted for Salmonella typhimurium detection. Milk samples were containing 3(60%) positive samples while no positive sample was detected in milk products. On the basis of the results of present study, it is recommended that milk should always be boiled before use. Further Hygienic measures should be adopted during milking. Proper handling of milk and milk products is also important to limit the cross contamination. It is also advised that standards such as pasteurization and HACCP should be introduced to facilitate production of good quality milk. Electronic and print media should also create awareness among people about food safety. Availability: Items available for loan: UVAS Library [Call number: 2408-T] (1).

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Relationship Of Parent’s Level Of Education And Socio-Demographic Variables With Child’s Immunization Status: A Cross-Sectional Study In The Rural Areas Of District Layyah

by Abida Zahoor (2012-VA-573) | Prof. Dr. Mansur-ud-Din Ahmad | Prof. Dr. Muhammad Athar Khan | Prof. Dr. Masood Rabbani.

Material type: book Book; Literary form: not fiction Publisher: 2015Dissertation note: Immunization is a very important element of public health. It is the process whereby a person is made immune or resistant to an infectious disease, generally by the administration of a vaccine. Vaccines stimulate the body’s own immune system to protect the person against subsequent infections. It prevents against various communicable diseases such as Tuberculosis, Tetanus, Pertussis, Diphtheria, Poliomyelitis, Hepatitis B and Measles. A cross-sectional study was conducted on 200 parents having at-least one child under five years of age. Data was collected from the rural areas of district Layyah. The purpose of the study was to investigate the relationship between parent’s level of education and child’s immunization status on one hand and the effect of sociodemographic variables on child’s immunization status on the other hand. In this study, it was concluded that there was a significant association between parent’s level of education and the socioeconomic variables with child’s immunization status. Low rate of parent’s literacy, especially health literacy, poor socioeconomic status, large population size, parent’s refusal, difficulty in accessing immunization services and lack of health facilities were identified as the main barriers to immunization completion. As parent’s level of education is considered to be the corner stone in the progress of modern nation so education is a very important element as educated parents play a significant role in achieving the health of their children. It was concluded that there was a significant association between literacy status of parents, income status of parents and the immunization status of children. The immunization status of children in the rural areas can be improved by higher household income, literacy, better Summary 41 health knowledge, exposure to media, maternal empowerment and mother’s participation in decision-making process. The policy makers should stress on the education of the people especially female education. Health awareness campaigns should be carried out so that parents can gain the benefits of vaccination. 6.1 Hypothesis Ho: there is no significant relationship between parent’s level of education and child’s immunization status. H1: Parent’s level of education has significant relationship on child’s immunization status 6.2 Methodology A cross-sectional study of six months duration from July 2016 to December 2016 was conducted in the rural areas of district Layyah in which parents of children under 5 years of age were interviewed about the immunization status of their children. Convenient sampling technique was used to collect the data. Data was collected from 200 parents living in the rural areas of district Layyah. The collected data was analyzed by using SPSS version 16.0. 6.3 Statistical Design The dependent variable “child’s vaccination” and independent variables “parent’s educational level, household income, parent’s occupation and family composition” were analyzed by using SPSS version 16 and Microsoft Excel. Data entry and analysis was done on SPSS-16. Chi-square test was used for statistical testing. A p-value of <0.05 was considered significant. Frequencies and percentages of categorical variables were calculated. Cross Summary 42 tabulations were done among dependent and independent variables. Chi-square test was applied on different sociodemographic factors and child’s immunization status to define the significant associations. 6.4 Study Outcomes It is concluded that there is a significant association between literacy status of parents, income status of parents and the immunization status of children. The major benefit of this study is that, the research findings can be used to assess the relationship of parent’s education with child’s immunization status and to find out those factors which are the main hindrance in child’s vaccination coverage. It will also provide new dimensions for further research related to child immunization and the health managers will find new facts and figures that will help them to make national decisions with the certainty of success. Availability: Items available for loan: UVAS Library [Call number: 2654-T] (1).

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