जरूरत पड़ी तभी होगा पीसीआर स्वैब टेस्ट
source https://www.bhaskar.com/international/news/there-will-be-a-breath-test-for-kovid-19-in-singapore-the-government-allows-the-report-will-also-be-available-immediately-128524944.html
source https://www.bhaskar.com/international/news/there-will-be-a-breath-test-for-kovid-19-in-singapore-the-government-allows-the-report-will-also-be-available-immediately-128524944.html