Date of Completion


Document Type

Research Project

Degree Name

Grade 12


pacifier, Streptococcus pneumoniae, pneumococcal disease


Pacifiers are frequently used by children to substitute breastfeeding and as a comfrot item, they also bear the risk of carrying pathogenic bacteria that can make their users sick. The bacteria this study focuses on is Streptococcus pneumoniae, which causes diseases like pneumonia, meningitis, acute otitis media, and more. The study aims to determine the bacteria's morphological characteristics as obtained from the pacifier samples, affirm their presence, and determine whether there is a significant presence of Streptococcus pneumoniae in the representative samples as exhibited by their colony count. Pacifiers collected from three barangays in Dasmarinas, Cavite were swabbed and underwent serial dilution and spread plating in a Blood Agar Plate No Streptococcus pneumoniae was detected in any of the samples, most bacteria found were various strains of bacillus and cocci. As the study focuses on detection, data such as the presence of Streptococcus pneumoniae or other bacteria were interpreted through a frequency distribution table.

First Advisor

Dennis Yu Perona