https://static.poder360.com.br/2020/04/2020.04.15-journal-manuscript-final.pdf
I still do not know whether or not Dr. Zelenko administered COVID-19 tests before starting his HCQ+AZ+Zn treatments. In the Brazilian study above, that was not done. Here are the study's inclusion criteria:
Patient over 18 years old and flu-like persistent symptoms > 3 days, with a probable diagnosis of COVID-19 and no immediate indication for hospitalization.
The below is from the Brazilian study's abstract:
Results: Of the 636 symptomatic outpatients, 412 started treatment with hydroxychloroquine and azithromycin and 224 refused medications (control group). Need for hospitalization was 1.9% in the treatment group and 5.4% in the control group (2.8 times greater) and number needed to treat was 28 (NNT = 28). In those who started treatment before versus after the seventh day of symptoms, the need for hospitalization was 1.17% and 3.2%, respectively.
Good link to the real bra8iannstudy