Thakar et al., Indian J. Med. Res.,
doi:10.4103/ijmr.IJMR_3665_20 (Peer Reviewed)
Chloroquine nasal drops in asymptomatic & mild COVID-19: An exploratory randomized clinical trial
Small RCT for CQ nasal drops suggesting efficacy in preventing infection, while no significant difference was seen for patients that already had mild COVID-19.
Thakar et al., 2/28/2021, peer-reviewed, 11 authors.