6/19
Positive
Pre-Exposure Prophylaxis study (treated before exposed to the virus)
Sawai Man Singh Hospital, India (News) (not included in the study count)
HC Q beneficial as preventive drug: SMS doctors told ICMR
PrEP with 4,300 very high risk healthcare workers in a hospital with up to 500+ COVID patients at a time, only 1% cases, all recovered.
Currently no formal study is available so this is not included in the study count.