The number of babies diagnosed with a drug-resistant superbug at a maternity hospital in Romania's capital has risen to 39, authorities said on Monday.Raluca Alexandru, spokesperson for Giulesti Maternity hospital, closed on November 30 due to the outbreak, said tests have confirmed the latest figure. It is triple the number of newborns diagnosed with antibiotic-resistant Staphylococcus aureus last month.Health Minister Sorina Pintea said she will decide later this week whether to keep the hospital closed. The infants are hospitalised in three children's facilities in Bucharest. No deaths have been reported.The bacteria often live on the skin or in the nostrils without causing symptoms but they can become dangerous if they enter the bloodstream, destroying heart valves or causing other damage. Microbiologists say up to 30 percent of humans are long-term carriers.It is not clear how this outbreak began. Health authorities have suggested that the hospital does too many C-sections and that hygiene standards are not respected.Eleven staff members have tested positive for the superbug. They have been suspended from work and face treatment.In a related development, the National Authority of Quality Health Management said only 23 of 147 hospitals it had checked respected all of the approximately 500 requirements to function. It said 106 facilities partially respected the requirements.The requirements include issues such as hygiene, patient confidentiality, personnel structure, budget, fire risk and data protection.A statement said the results explained the poor public image of Romania's health care system.