# Viral Surveillance Panel (VSP) sequencing and analysis frequently asked questions (FAQs)

\*\*What is the recommended read length for sequencing?\*\*2x150 bp is recommended for both Viral Surveillance Panel (VSP) v1 and v2.

**How many reads per sample are recommended?**

(Note: M = million; PE = Paired End)

VSP v1 and v2 = Minimum 2 M PE reads (1 M clusters) for low complexity samples, or 8 M PE reads (4 M clusters) for high complexity samples (eg, wastewater). Labs may need to optimize reads per sample based on project and data needs.

\*\*How to analyze the data?\*\*VSP v1: [DRAGEN Microbial Enrichment](https://basespace.illumina.com/apps/14527515/DRAGEN-Microbial-Enrichment?preferredversion), [DRAGEN Microbial Enrichment Plus](https://basespace.illumina.com/apps/16156140/DRAGEN-Microbial-Enrichment-Plus?preferredversion), or [DRAGEN Targeted Microbial](https://basespace.illumina.com/apps/16717701/DRAGEN-Targeted-Microbial?preferredversion)\
VSP v2: [DRAGEN Microbial Enrichment Plus](https://basespace.illumina.com/apps/16156140/DRAGEN-Microbial-Enrichment-Plus?preferredversion)

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