Type and Quantity of Bacteria on Microphones in Karaoke Shops

Abstract

The aim of this crosssectional
descriptive study was to determine
type and quantity of bacteria on microphones at Karaoke shops. In this study,
Bacteria concentration on 104 microphone samples were collected on weekday
and weekend by single stage Anderson impactors. Bacteria types were identified
using Gram strain and biochemical test. The collected data were analyzed using
descriptive and inferential statistic. It reveals that the average bacteria quantity
on microphones was 414.86293.25 CFU/m3 (GM+GSD=332.063.15CFU/m3).
Average bacteria in each Karaoke shops was different. When compared between
bacteria quantity on weekday and weekend, bacteria were significantly higher
on weekend (GMGSD=552.191.95 CFU/m3) than on weekday (GMGSD=
271.39+2.47 CFU/m3) at 0.05 (p=0.001). The types of bacteria found most on
microphone were Micrococus sp., Staphylococcus sp. and Bacillus sp. Thus, it is
suggested that the owners should clean the microphones before use to reduce
bacteria threatening the health of employee and customers.