What part of my response made you think the dates were in any way significant?
This is a meta study - a study of other studies - that was published in October of 2020 when there was virtually nothing to source a meta study on. If you took the time to actually look this study up, you'd find dozens of linked studies over the past three and a half years who tried to repeat their findings and could not.
Yes, the first paper was in 2005, but what you keep missing is the part about cell cultures - cells in a petri dish, flooded with a solution of the chloroquine, were less likely to be infected before or after exposure - but you can't just flood the cells of an organism with a drug solution like that, and neither chloroquine nor hydroxychloroquine have ever been shown effective against either SARS or COVID-19 when ingested by living animals, human or otherwise.