The research paper and YouTube video by IHU Mediterranee Infection supports the claim.
The researchers gave 600mg of hydroxychloroquine for six days to a group of patients suffering from COVID-19 from early March to 16 March 2020. This had shown a significant reduction of the viral carriage. On 6-day observation, it shows that 100% of patients treated with hydroxychloroquine and azithromycin combination were virologically cured.
An interview video of Dr.Raoult as he is one of the researchers, uploaded in YouTube supports the claim and states that this study could later be extended to other viruses.
The COVID-19 pandemic has given rise to a lot of potentially dangerous misinformation. For reliable advice on COVID-19 including symptoms, prevention and available treatment, please refer to the World Health Organisation or your national healthcare authority.