But that paper is specifically not about COVID-19 - "it is reasonable to suggest a human Coronavirus HCoV-OC43 as a surrogate for SARS-CoV-2" - and is only test

But that paper is specifically not about COVID-19 - "it is reasonable to suggest a human Coronavirus HCoV-OC43 as a surrogate for SARS-CoV-2" - and is only tested in-vitro - "For each irradiation experiment 50 μl of virus suspension [...] was placed in each well of a black 24-well plate". It might encourage people to give grant money for further research but it is 100% not evidence for the efficacy of "sticking a UV light inside the body will kill COVID-19".