Materials and Methods: Study approach: This was an evaluative study to assess the effectiveness of structured teaching programme:

Study design: This study was pre-experimental 1 group pre-test, post-test deign without control group:

Population - this study was conducted on mother having a child below 6 months of age residing in Bagalkot:

Sample - mothers attending Pediatric OPD of HSK Hospital & Research Centre in Bagalkot were selected:

Sample size - A total of 60 mothers were included in this study:

Tool for data collection -Likert’s attitude scale were used: Method of data collection - the data was collected using self-administration of Questionnaire for Literate mothers and Structured Interview schedule for Illiterate mothers.

Results: After collection the data are organized and analysed with the help of mean, median and percentage and the socio-demographic characteristics of mothers were a follows: age - out of 60 mothers the highest percentage i.e. 40% were belonging to the age group of 23 - 27 years and lowest percentage i.e. 10.1% of the mothers were belonging to the age group of 33 and above years: educational status - the highest percentage i.e. 33.31% of the mothers were completed PUC and lowest percentage 6.66% had no formal education: religion - the highest percentage i.e. 53.3% mother were belongs to Hindu and lowest percentage i.e. 10.1% were belongs to Christian: occupation - the highest percentage i.e. 43.3% mothers were housewives and lowest percentage i.e. 8.3% were labourers: type of family - the highest percentage i.e. 55% of mother belongs to joint family and lowest percentage i.e. 45% of mothers were belongs to nuclear family: family monthly income - the highest percentage i.e. 33.3% of mothers were having their monthly income between 15,001 - 20,000/- and lowest percentage i.e. 8.33% of mothers were having their income 20,001/- and above: number of children in the family - the highest percentage i.e. 50.1% of mothers were having two children and lowest percentage i.e. 18.33% of mothers were having only one child: history of optional vaccines in the family - out of 60 all i.e. 100% mothers were had no history of optional vaccines in the family: source of information about optional vaccines - majority of the mothers i.e. 68.33% got information from health professionalists and lowest percentage i.e. 31.67% of mothers got information from mass media: pre-test- the highest percentage i.e. 55% of mother were having slightly negative attitude and lowest percentage i.e. 5% were having highly negative attitude: post-test - the highest percentage i.e. 33.33% of mothers were having good knowledge and lowest percentage i.e. 5% were having very poor knowledge: the highest percentage i.e. 58.33% of mothers were having slightly positive attitude and lowest i.e. 5% were with highly positive attitude

Conclusion: After thorough study, it is clear that all the mothers of paediatric children especially under-five children need to be educated about the optional vaccine and their preventable diseases and they should also be taught about doubts about the effectiveness of the vaccine or misconception about vaccines. Here the mothers must be adequately educated with frequent health education campaigns.