Optimization of the Illumina COVIDSeq™ protocol for decentralized, cost-effective genomic surveillance
Carpenter, R. E.; Tamrakar, V. K.; Almas, S.; Rowan, C.; Sharma, R.
Show abstract
A decentralized surveillance system to identify local outbreaks and monitor SARS-CoV-2 Variants of Concern is one of the primary strategies for the pandemics containment. Although next-generation sequencing (NGS) is a gold standard for genomic surveillance and variant discovery, the technology is still cost-prohibitive for decentralized sequencing, particularly in small independent labs with limited resources. We have optimized the Illumina COVID-seq protocol to reduce cost without compromising accuracy. 90% of genomic coverage was achieved for 142/153 samples analyzed in this study. The lineage was correctly assigned to all samples (152/153) except for one. This modified protocol can help laboratories with constrained resources contribute to decentralized SARS-CoV-2 surveillance in the post-vaccination era.
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