Students of higher institutions are assumed to have risky sexual behaviour that exposed to HIV infection. This study aimed to identify imperative information on Sexual risky behavior and Pre-exposing factors to have multiple sexual partners among Mizan-Tepi University students in Ethiopia in order to design an intervention method. Institution based Crosssectional study was conducted from April to May 2015. Both qualitative and quantitative study was conducted among 808 students. The data were collected using self-administered questionnaire and analysed using SPSS V.16.0. 306 (37.9%) students ever had sex and 168(63.36%) of them had in campus. Among whoever had sex, 37.9% had sex in the last 12 months, 28.3% had multiple sexual partners, 211(69.4%) not used condom consistently, 110(36.9%) have sexual partner out of campus, 214(71.1%) were attend night dance group and 539(66.71%) used substance. Students that view Pornography, use substances and attend night group dance were 2.8 (OR, 95%CI, 2.801 (1.658-4.730), 1.5 times (OR, 95%CI, 1.502(.865-2.609) and 1.3 times (OR, 95%CI, 1.301(.787-2.152) more likely to have multiple sexual partner respectively. Among respondents who perceive the risk of HIV in the campus reduce the likely hood to have multiple sexual partners by 0.7 (OR, 95%CI; 0.686(0.809-0.517) and having multiple sexual partner reduce the probability of using condom by half (0.5) unit (OR, 95%CI, 0.517(.295-.904) at P<0.05. Substance use, sexual partner, living out of campus, shisha use, night group dance and STD history were identified as predisposing factors to risky sexual behaviour. The study revealed serious risky sexual behaviors and predisposing factors among the students, which may expose them to HIV. The universities should review the existing curriculum to integrate or separately develop as a course which can be taken as sex education and HIV/STD, and provide special attention to female students' life skill training.

Any adverse change in the environmental conditions affects the life of aquatic organisms in water. Fish death was suddenly observed in Lake Kabo. To investigate its cause and look for solution, a research team started to consider the Lake. The present study was conducted to identify the reason for the fish deaths that accidentally occur in the lake. To achieve the objective samples were collected from four different sampling sites on the lake from October 2017 to August 2018. The four sampling stations on the lake were selected based on criteria and were coded. Sample collection was made every month. Data were analyzed using SPSS version 23. Experimental activities were carried out both on the spot and in laboratory. The results analyzed were compared with permissible limits prescribed by WHO, FAO, BIS and other references. In this study, the pH (6.1-8.7), total dissolved solid (TDS) (60-251.3 mg/L) and total alkalinity (101-195 mg/L) of the lake followed the prescribed limits set by WHO (1993) and BIS (1991). Critical dissolved oxygen (DO) value (2.8-4.7 mg/L) and temperature (T°) (25-30°C) of the lake were found below the specified limit for tilapia Fish. In this study, the reasons for the sudden death of tilapia fish in the lake include: highly fluctuated values of T°, DO and pH value of the lake water especially in rainy season. The study concluded that tilapia fish could not tolerate the fluctuation of DO value which is less than 3 mg/L. The result from secchi-disk also supported the less value of DO. The mean nutrients values for Ca++, PO 4-3 and (Cl-) of the lake were 7.6 ± 2.6, 0.1039±0.15 and 1.5102±0.7 mg/L, respectively. The reduced level of DO and extreme fluctuation of pH were the expected reasons for the sudden fish death in the lake during rainy season.

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