1. SARS-CoV-2 positivity rates in tear secretions of inpatient COVID-positive individuals in an Indian tertiary care setting
- Author
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Amit Raj, Prateek Nishant, Binod K Pati, Bhawesh C Saha, Prabhakar Singh, Asim Sarfaraz, Sanepalli Sravani, and Kopal Shrivastav
- Subjects
conjunctiva ,coronavirus ,lacrimal apparatus ,ocular infection ,pandemic ,prevention ,Ophthalmology ,RE1-994 - Abstract
Purpose: In the third wave of the coronavirus disease 2019 (COVID-19) pandemic, despite progressive vaccination coverage, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was rapidly spreading and the possibility for ocular transmission of COVID-19 was most relevant. This study aimed to determine the presence of SARS-CoV-2 RNA in tears as detected by real-time polymerase chain reaction (RT-PCR), among individuals who tested COVID-positive during the third wave of the COVID pandemic. Methods: Among 90 patients admitted with mild to severe COVID-19 infection (ranging from asymptomatic to severe symptoms), separate conjunctival samples were obtained from both eyes without topical anesthesia taking precautions to avoid contamination. Inferior fornices of the eyes were swept slowly with sterile Dacron swabs for 10 s or until visibly wet. They were inoculated directly in a viral lysis buffer containing carrier RNA and transported to the Virology Laboratory for the detection of SARS-CoV-2 RNA by RT-PCR. Conjunctival swabs were declared positive based on cycle threshold values of
- Published
- 2025
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