A new study found one in five nursing home residents with advanced dementia harbor strains of drug-resistant bacteria and more than 10 percent of the drug-resistant bacteria are resistant to four or more antibiotic classes. The research was published online today in Infection Control & Hospital Epidemiology, the journal of the Society for Healthcare Epidemiology of America. Drug-resistant Escherichia coli (E. coli) and Proteus mirabilis (P. mirabilis) were the most common bacteria found among the study subjects. Nearly 90 percent of the bacteria found were resistant to three types of antibiotics, most notably ciprofloxacin, gentamicin and extended-spectrum penicillins.
Genetically related bacteria were detected in 18 of the 22 nursing homes (82 percent). Possible routes include overlapping hospital stays among residents with advanced dementia from different nursing homes and healthcare professionals cross-covering multiple nursing homes.
“Ongoing efforts to curb the acquisition and spread of this bacteria among nursing homes residents is crucial since this is an issue that goes beyond just one realm of care,” said D’Agata. “Healthcare institutions must work together to help curb the transmission of these emerging, dangerous pathogens.”