Few details are available, but it seems HCQ was primarily used in hospitalized patients.
With the current state of NY hospitals, it's likely only the sickest #COVID19 patients received HCQ.
First, the benefit of viral load reduction from HCQ may no longer be important once the cytokine storm path is activated
Alternative agents such as the anti-IL-6 monoclonal antibody Tocilizumab may be more effective in late cases.
@raoult_didier Dr. Zelenko (@zev_dr) @riganoESQ & I believe HCQ is most effective in EARLY treatment when viral load reduction is critical...in line with well-known antivirals for other acute infections.