Over the past three weeks, two newborn girls have contracted Salmonella infections at a Central California hospital. Authorities are investigating how the infants, treated at Doctors Medical Center in Modesto, were exposed to the bacteria. “We don’t have an answer yet,” said Dr. John Walker of the Stanislaus County’s Public Health Services. “However, there has been intense investigation.” One of the victim’s moms suspects that the infant formula given to her daughter in neonatal intensive care may have been contaminated. A hospital administrator at Doctors told CBS Sacramento that this appears to be an isolated event, not part of a larger outbreak. “Fortunately this doesn’t appear to be a widespread issue; however state department of health is looking closely and hopefully all of us get answers soon,” said Walker, according to CBS Sacramento. No other cases have been reported within the three week period.