The main bacteria in hospitals isolated are: Haemophilus influenzae 21, 8%, Escherichia Coli 20, 8%, Streptococcus pneumoniae 19, 4%, Klebsiella pneumoniae 18, 3%, Pseudomonas aeruginosa 17, 5%, Staphylococcus aureus 12, 8%, Shigella flexneri 6, 9%, Enterococcus faecium 2, 9%.