How long do the common nosocomial pathogens and the Multi-drug Resistant Organisms (MDROs) persist on inanimate surfaces ?
Dear Nirghani Mohamed, this article will help you
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How long do nosocomial pathogens persist on inanimate surfaces? A systematic review. Kramer A et al. BMC Infect Dis. (2006)
BMC Infect Dis. 2006 Aug 16;6:130. Review.
There are many nosocomial pathogens, which can survive on inanimate surfaces. The survival of nosocomial agents on inanimate objects depend on types of pathogens (bacteria or fungi,Chlamydia, Rickettsia) besides other factors. We have repeatedly isolated Cryptococcus neoformans from pigeon droppings on Pal sunflower seed medium after every five years from the same site on four occasions.Our findings indicated that Cryptococcus neoformans can survive for 20 years in pigeon excreta of the same site if not exposed to ultra violet rays of sun.Further,we also isolated Microsporum canis from the soil of kennel up to 3 months.Later,we did not continue the investigation.
You can refer the review article mentioned by Dr.Catia.
Prof.Dr.Mahendra Pal,Ph.D.,DSc.
Founder Director of Narayan Consultancy on Veterinary Public Health and Microbiology,Anand,India
It totally depends on the type of pathogen, as in the case of strain of Pseudomonas aeruginosa, even though they are non-spore forming but can remain persist on any inanimate surface especially in moist environment.
Witty, D. B. and L. P. Elliott. 1971. Staphylococcus aureus isolated from the intestinal tract of starlings.
The Kentucky Warbler. v. 47. August. pp. 35-38. Survival times of S. aureus in Starling fecal material were quite variable depending upon the season of the year and the environment in which the filters were placed. The longest survival tine was 17 days in July when the filter was placed in a moist shaded area. The temperature range during this month was 69-95 F. The longest survival time recorded in direct sunlight was 6 days in December, which had a temperature fluctuation from 30-51 F.
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