PMC:7272971 / 25506-26236 JSONTXT

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In contrast, 55 of 60 sputum samples were positive upon PCR (92 per cent). 76 A third study examined 63 confirmed COVID‐19 patients and four suspected patients by PCR for viral RNA of conjunctival swabs. 77 Only one conjunctival sample was confirmed positive by PCR, and the only patient with conjunctivitis was negative. 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