Abstract
This article aimed to identify the types of bacteria found in bus support bars belonging to the public transport system of the city of Macapá - AP, and thus, map, among the surveyed routes, the vehicles with the highest rate of bacterial contamination. Samples were collected from 10 city buses and minibuses and cultivated to verify the bacterial species present there. After this process, biochemical tests were performed to differentiate them. Additionally, in 85% of the samples of the bacteria Staphylococcus aureus, lesser (15%) of the species Staphylococcus epidermidis were found. In addition, non-fermenting gram-negative bacilli (20%) were found naturally in the environment and in (5%), an enterobacterium of medical interest identified as Serratia liquefaciens. The study showed the presence of bacteria colonizing the bus bars, showing that they are favorable environments for the spread of pathogenic bacteria. Thus, it is indispensable to adopt more effective cleaning measures for vehicles and to alert the community about the importance of hand hygiene and washing after using the service.