Hydroxychloroquine with or without Azithromycin in Mild-to-Moderate Covid-19. NEJM. July 23rd, 2020 July 25, 2020 Daniel Salas Spread the word Hydroxychloroquine and azithromycin have been used to treat patients with coronavirus disease 2019 (Covid-19). However, evidence on the safety and efficacy of these therapies is limited. For more information, please click here