Abstract
Session 7 of the 2023 Viral Clearance Symposium reviewed progresses in virus retentive filtrations applied to both upstream and downstream processing. Upstream topics included investigations and applications of media viral filtration for upstream cell culture viral risk mitigation. Downstream topics included evaluation of viral breakthrough in continuous processing using surrogate particles and demonstration of extensive viral filtration cycling with flow interruptions and long duration in connected process. Reuse of viral filters with proposed procedures was successfully demonstrated amid the supply chain challenge encountered during the pandemic. Discussions and additional considerations for the topics were also provided.
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