Five-minute Covid test will reveal if vaccine still works Identify from a drop of blood whether a person's Covid-19 vaccine is still valid, in 5 Minutes! BriefingWire.com, 12/18/2020 - Swiss high-tech company ZENUM has developed one of the most advanced technologies in the fight against Covid-19, and it could be ready for distribution as early as next month. The world's first five-minute portable Coronavirus test will also detect how much immunity remains after taking a vaccine. The game-changing ZEKNANO rapid test kit uses a tiny finger-prick blood sample, instead of swabs. It can be taken anywhere, has close to 100% accuracy, and also measures severity of infection. Thanks to nanotechnology, ZEKNANO not only detects Covid-19 within five minutes, but it identifies up to 14 different conditions simultaneously, including flu virus and infectious diseases.