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Updated: May 11, 2026

Inactivation of Pathogens via Visible-Light Photolysis of Riboflavin-5′-Phosphate
Published on: April 6, 2022
[Prevention of bacterial risk: pathogen inactivation/detection of bacteria]
P Morel1, C Naegelen, M Deschaseaux
1Établissement français du sang (EFS) Bourgogne-Franche-Comté, BP 1937, 1, boulevard Alexander-Fleming, 25020 Besançon cedex, France. pascal.morel@efs.sante.fr
Abstract:
Bacterial contamination of blood products remains the most important infectious risk of blood transfusion in 2013. Platelet concentrates (PC) are in cause in the majority of the transfusion reaction due to bacterial contaminations. A lot of prevention methods have been developed over the last 10 years (pre-donation interview, skin decontamination, diversion of the first 30 mL of the donation, leuko-reduction...), they have focused on limiting the contamination of the donations and prevent the bacterial growth in donations and/or in the blood products. These measures were effective and led to significantly reducing the risk of adverse effects associated with bacterial growth. However, every year there are about six accidents (with a high level of imputability) and one death. The reduction of the bacterial risk remains a priority for the French Blood Establishment (EFS). The procedure for skin disinfection is going to be improved in order to further strengthen this crucial step to avoid the contamination of donation. Methods of pathogen inactivation applied to plasma and PC are available in France and their effectiveness is demonstrated on the bacterial risk. Methods for bacterial detection of PC are used in many countries now. Automated culture is the most common. Alternatives are now available in the form of rapid tests able to analyze the PC just before the delivery and avoid false negatives observed with automated culture. Assessments are under way to confirm these benefits in 2013.
Insights
Bacterial contamination in platelet concentrates (PC) causes transfusion reactions. Enhanced prevention methods reduce risk, but bacterial detection using rapid tests is crucial for patient safety.
Area of Science:
- Transfusion Medicine
- Microbiology
- Public Health
Background:
- Bacterial contamination of blood products, particularly platelet concentrates (PC), poses the most significant infectious risk in blood transfusions.
- While prevention methods like pre-donation screening and leukoreduction have reduced risks, transfusion-associated bacterial infections still cause fatalities annually.
Purpose of the Study:
- To review the current strategies for preventing and detecting bacterial contamination in blood products.
- To highlight the ongoing efforts by the French Blood Establishment (EFS) to further minimize bacterial risks in transfusions.
Main Methods:
- Review of existing and emerging prevention strategies, including improved skin disinfection and pathogen inactivation methods.
- Evaluation of bacterial detection methods for PC, comparing automated culture with newer rapid test alternatives.
Main Results:
- Existing prevention measures have significantly decreased adverse events related to bacterial growth in blood products.
- Automated culture is a common bacterial detection method, but rapid tests offer potential to avoid false negatives before PC delivery.
Conclusions:
- Continuous improvement in prevention, such as enhanced skin disinfection, remains a priority for the EFS.
- Rapid bacterial detection tests show promise for improving the safety of platelet concentrate transfusions by providing timely results.
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