Background; epidemic and natural disasters are serious public health emergencies. Particularly,rnthey occurred with little or no warning in the areas where health system is unprepared to dealrnwith the emerging problems. rnFrom February 2001 to February 2003 E.C. stay in field epidemiology and training program, inrnAddis Ababa University and resident attachment in Addis Ababa region and field assignment byrnFMOH to different region we carried out outbreak investigation, surveillance data analysis, surveillancernsystemrnevaluation,rnhealthrnprofilernassessment,rnacceptedrnabstractrnforrnscientificrnpresentation,rnPublicrnHealthrnneedrnassessment,rnresearchrnproposalrnandrnotherrnadditionalrnoutputs.rnrn Epidemiological investigations of two outbreaks conducted during these periods. Descriptivernepidemiology and outbreak investigations of acute AWD and HINI conducted. rn Five years Surveillance data analysis on descriptive epidemiology of disease under surveillancernin Addis Ababa Regional Health Bureau was also performed in March 2001E.C. In additionrnto these morbidity and mortality data was obtained from Federal Ministry of Health, Plan andrnprogram department and Addis Ababa city Administration Health Bureau gathered and analyzed. rn The aim of this data analysis was to provide an insight on the burden of morbidity and mortalityrndisease under surveillance. Surveillance system evaluation was also carried out in selected healthrnfacilities, in Kirkose sub-city health office and regional health bureau in 2003E.C. rnThe purpose of this evaluation was to describe how well the communicable disease surveillancernsystem in the region is working to meet its purpose and objectives. Data were gathered throughrninterviewing of concerned bodies using questionnaire coupled with reviewing of existing recordsrnand reports and analysed by system attributes like simplicity, timeliness and completeness. rnThe Belg (Sugum) Public Health and Nutrition emergency need assessment was conductedrnjointly with other partners within selected Woredas in zone Two and Four in Afar region in July rn2002E.C. The purpose of the assessment was to identify potential risk for the occurrence of publicrnhealthrnemergencies,rncurrentrnpreparednessrnstatusrnandrnresponserncapacityrnofrnthernregion.rnExistingrnrnrecordsrnandrnreportsrnwerernreviewedrntornobtainrndatarnonrnleadingrncausesrnofrnmorbiditiesrnandrnmortalities,rnhealthrnhumanrnresources,rnimmunizationrnandrnITNrncoveragernepidemicrnpronerndiseasesrnandrncurrentrnstocksrnemergencyrndrugsrnandrnmedicalrnsuppliesrnusingrndatarncollectionrnchecklists.rnFormalrninterviewsrnwasrnmadernwithrnWoredarnofficialsrnandrnhealthrnprofessionalsrntornobtainrnin-depthrnunderstandingrnrnaboutrnmajorrnhealthrnproblems,rnoccurrence,rndistribution,rnandrndurationrnofrntherndiseasernoutbreaks,rncurrentrnpreparednessrnstatus,rnandrnresponserncapacitiesrn.rnrnFinally research proposal on Prevalence of Salmonellosis among febrile out patients in AddisrnAbaba by 2003 E.C was prepared and submitted to Addis Ababa University Ethical ReviewrnBoard and approved. Apart from mentioned above acute watery diarrhoea outbreak responsernsupportive supervision in Addis Ababa 2002 E.C also conducted.