What bacterial species can be eliminated as possibilities for the bacteria responsible for anna's infection?

Based on the isolated bacteria and the gross examination of the resultant colonies, Anna’s bacterial infection was caused by Gram-negative rod-shaped species. Therefore, the possible bacteria species that can be eliminated are the Gram-positive bacteria. The following gram-positive bacteria that be eradicated are Streptococcus pneumonia, Streptococcus pyrogenes, Bacillus megaterium, and Micrococcus luteus.