https://www.yahoo.com/finance/news/nasal-spray-prevents-covid-19-infections-204611720.html Science may offer a more accessible alternative, though. Columbia University researchers have developed a nasal spray that has successfully prevented COVID-19 infections in tests with ferrets as well as a 3D model of human lungs.
looks like finally a vaccine was developed with reported 90% success rate. While initially healthcare and emergency workers will be vaccinated. But this is also a good news.