Methods
An observational retrospective cohort study was conducted on a cohort of
laboratory confirmed patients of SARS-CoV-2 diagnosed by qRT-PCR of
nasopharyngeal swabs in periods; April-2021 & January-2022; that were
sequenced and variants were recorded. Patients were invited for a
telephonic interview after voluntary and informed consent was obtained
from each participant wherein, the demographics, co-morbidities, oxygen
requirement and mortality outcomes of the patients were enquired about.