Every study done with HCQ / Z-Pack WITHOUT Zinc tablets has had mixed results because people have varying amounts of blood zinc depending upon their health, age, and diet.
A study that does not include Zinc is doomed (designed?) to have mixed results.
Yes, every successful clinician who has shared his or her success in treating patients early emphasized the role of ZINC.
Hydroxychloroquine holds the door to the cell open so zinc can run inside and stop the virus from making photocopies of itself (i.e. replicating).
They work TOGETHER to stop the viral load from increasing so the patients own immune system has a better shot. The NIH trial does not include the mineral. It will probably have mixed to disappointing results depending on how much ZINC level a patient has.