[Influence of magnetic field on the growth of pathogen microorganisms isolated from the indoor environment at the Archivo Nacional de la República de Cuba].
This in vitro study exposed five microorganisms (including indoor isolates and reference strains) to an extremely low frequency magnetic field (60 Hz, 3 mT) for two hours. The authors report a statistically significant increase in colony counts in exposed samples versus controls, with stronger stimulation in nutrient broth and in bacteria compared with yeasts. They conclude that the observed stimulation could increase health risk for staff and visitors at the Archivo Nacional.
Key points
- The experiment tested ELF magnetic field exposure (60 Hz, 3 mT) for 2 hours on bacteria and yeasts.
- Colony counts (log CFU/mL) were used to quantify growth after exposure.
- Exposed samples reportedly showed statistically significant stimulation compared with controls (p=0.05).
- Growth stimulation was greater in nutrient broth than in distilled water.
- Bacterial stimulation was reported as higher than yeast stimulation.
- The strongest stimulation was reported for Listeria sp., followed by E. coli, Streptococcus sp., Candida guillermondii, and Saccharomyces cerevisiae.
- Authors interpret the stimulation as potentially increasing health risk in the archive environment.
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AI-generated summaries may be incomplete or incorrect. This content is for informational purposes only and is not medical advice.
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