News Update on Bacterial Contamination Research: Jan – 2020

Bacterial contamination of pancreatic necrosis : A prospective clinical study

In a prospective clinical study including 114 patients with acute necrotizing pancreatitis, but excluding patients with a pancreatic abscess, necrotic material obtained at surgery was tested bacteriologically. Intestinal microorganisms were cultured in 39.4% of the cases. The contamination rate was 23.8% in patients operated on during the primary 7 days of the attack; it rose to 71.4% within the third week and decreased to 32.5% after the fourth week. Intra- and extrapancreatic necrosis was more widespread and pancreatitis-associated ascites was more frequent in patients with proven contamination. the amount of objective signs was 4.5 (median) and postoperative mortality was 37.8% in bacteriologically positive subjects, whereas the amount was 3.5 (median) and mortality was 8.7% in bacteriologically negative patients. Morphologic and clinical alterations were more severe, and therefore the deathrate was significantly elevated, in patients with a brief history of disease and bacterial contamination of necrotic tissue. [1]

Bacterial Contamination of Blood Components

Blood for transfusion may be a potential source of infection by a spread of known and unknown transmissible agents. Over the last 20 years, astounding reductions within the risk of virus infection via allogeneic blood are achieved. As a results of this success, bacterial contamination of blood products has emerged because the greatest residual source of transfusion-transmitted disease. This paper summarizes the present status of detection, prevention, and elimination of bacteria in blood products for transfusion. [2]

Bacterial contamination of uniforms

Microbiological sampling of nurses’ uniforms was undertaken employing a Casella slit sampler.Staphylococcus aureus, Clostridium difficile and vancomycin-resistant enterococci were detected on uniforms both before and after a span of duty. Recommendations for provision and changing of nurses’ uniforms are made. [3]

Slit lamps and lenses: a potential source of nosocomial infections?

Purpose: The aim of the study was to guage the bacterial contamination level of contact surfaces on slit lamps and therefore the grip areas of lenses.

Methods: Within unannounced audits, two regions of the slit lamps (headrest and joystick), indirect ophthalmoscopy devices, and ultrasound probes were obtained with rayon-tipped swab. Non-contact lenses used for indirect fundoscopy were pressed on RODAC (Replicate Organism Detection and Counting) plates. 100 and eighty-one surfaces were sampled. the entire number of colony-forming units was assessed and bacterial species were identified. Spa-typing and antimicrobial susceptibility testing were performed from Staphylococcus aureus isolates. [4]

Evaluation of Bacterial Contamination and Safety of Bangladeshi Paper Currencies (Taka) Collected from Various Food Vendors

Aims: paper money notes can act as transmission vehicle for microorganisms due to their widespread use and constant exchange from hand handy. This study aimed toward determining the extent of bacterial contamination and therefore the safety of the notes collected from some food vendors in Noakhali district, Bangladesh. [5]


[1] Beger, H.G., Bittner, R., Block, S. and Büchler, M., 1986. Bacterial contamination of pancreatic necrosis: a prospective clinical study. Gastroenterology, 91(2), (Web Link)

[2] Brecher, M.E. and Hay, S.N., 2005. Bacterial contamination of blood components. Clinical microbiology reviews, 18(1), (Web Link)

[3] Perry, C., Marshall, R. and Jones, E., 2001. Bacterial contamination of uniforms. Journal of Hospital Infection, 48(3), (Web Link)

[4] Slit lamps and lenses: a potential source of nosocomial infections?
Bianka Sobolewska, Michael Buhl, Jan Liese & Focke Ziemssen
Eye volume 32, (Web Link)

[5] Kumar Mukharjee, S., Hossain, S. and Saifur Rahman, M. (2017) “Evaluation of Bacterial Contamination and Safety of Bangladeshi Paper Currencies (Taka) Collected from Various Food Vendors”, Journal of Advances in Microbiology, 4(2), (Web Link)

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