Bhandari et al., International Journal of Medicine and Public Health,
doi:10.5530/ijmedph.2021.1.4 (Peer Reviewed)
A Preventive Study on Hydroxychloroquine Prophylaxis against COVID-19 in Health Care Workers at a Tertiary Care Center in North India
Retrospective 4,239 healthcare workers using HCQ prophylaxis showing no mortality, 8 mild symptomatic cases, and 85 asymptomatic cases, with the cases occuring mostly in the first week.
Bhandari et al., 2/28/2021, India, South Asia, peer-reviewed, 10 authors.