Trends in Collection of Microbiological Cultures Across Veterans Affairs Community Living Centers in the United States Over 8 Years.

The study counted cultures but did not assess why they were ordered or whether residents had symptoms. It could not separate true infection from colonization or contamination because any recovered organism was counted as positive. Multiple cultures from the same resident could overstate positive organism results. It did not measure antibiotic use, resistance, hospitalizations, costs, or other resident outcomes. Results may not apply to non-VA long-term care facilities because VA residents had more complex medical needs and staffing levels were higher. Outside laboratory cultures may not have been captured, and exact culture sites were not always known. The study did not measure why culture collection fell. Infection control and antibiotic stewardship are author explanations, not measured causes.

Do not read the fall in culture collection as proof that fewer infections were prevented or that antibiotics were reduced. The study counted culture collection and positivity only; it did not assess culture indications, true infection versus colonization, antibiotic use, or resident outcomes.