Result: Chronic lung disease and the SNV N E253A were significantly associated with symptom duration (multiple regression analysis, P < 0.05, respectively).
Table: E253A
Discussion: Furthermore, patients with chronic lung disease infected with SARS-CoV-2 bearing the non-synonymous SNV N E253A appear to have a longer symptom duration.
SARS_CoV_2 mutation literature information.
PMID: 
2021
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