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Enterovirus types in samples of activated sewage sludge
Summary
Sewage sludge in Lorraine wastewater treatment plants contained significant viral loads. Polioviruses were the most common, highlighting potential public health concerns from treated wastewater.
Area of Science:
- Environmental microbiology
- Virology
- Public health
Background:
- Wastewater treatment plants are crucial for public health.
- Activated sewage sludge can harbor diverse viral populations.
- Understanding viral content is essential for risk assessment.
Purpose of the Study:
- To quantify and identify viruses in activated sewage sludge.
- To determine the prevalence of specific enteroviruses in wastewater.
- To assess the potential public health implications of viral contamination.
Main Methods:
- Samples collected from two Lorraine wastewater treatment plants in 1983.
- Virus elution, concentration, and enumeration using the under agar technique with BGM cells.
- Viral typing via serum neutralization tests with LIM Benyesh-Melnick pools.
Main Results:
- A total of 436 plaque-forming units (pfu) were detected.
- Polioviruses were the most prevalent (41%), followed by Coxsackie B viruses (25%) and echoviruses (7%).
- 14% of isolates were identified, with 28% remaining unidentified.
Conclusions:
- Activated sewage sludge can serve as a reservoir for human enteroviruses.
- Polioviruses are frequently detected, indicating potential transmission routes.
- Further research is needed to identify unidentified viral isolates and assess risks.