Maissonasse, et al. (2020) [40]  In vivo study on macaques  Different strategies of treatment were compared with placebo, including HCQ alone or in combination with AZM, administrated either before or after viral load  When HCQ was administrated as pre-exposure prophylaxis, it did not protect against infection acquisition.Neither HCQ nor HCQ + AZM had beneficial effects in improving viral infection’s symptoms.