The results of a Gram stain can provide immediate clues about the type of infection: - Gram-Positive Bacteria: Common examples include Staphylococcus and Streptococcus species. These are often responsible for skin infections, pneumonia, and sepsis in children. - Gram-Negative Bacteria: These include Escherichia coli and Haemophilus influenzae, which can cause urinary tract infections, meningitis, and other systemic infections.