There are others attempting to crack the Holy Grail by demonstrating that a Covid cough exists. It doesn't sound as though anyone is near it yet.
Lets see how we go. I reckon Professor Abeyratne can help us bring home the bacon.
BTW the article below was published in August this year.
COVID-19 Instant Screening test, page-3
Currently unlisted. Proposed listing date: 4 SEPTEMBER 2024 #