Was the ZINC left out intentionally? My understanding is that it is a major factor.
Here is a link from someone who actually likes ZINC. Article includes links and reports on various studies using zinc and even HCQ.
https://aspire.care/featured/covid-19-zinc-and-more-with-lindsey-wells-nd/
Also article about a company that is supposedly supplying vast amounts of data from a large number of countries with no more than 1/2 dozen employees, named Surgisphere. They were responsible for providing the data for the now highly questioned Lancet article. This article has two authors who actually have email links so they can be asked questions about this, and for example, why are there so few or no studies included using zinc and an ionophore like HCQ, Ivermectin, or Quercetin?
Dr. Zalenko contacted the White House at least 3 times, including in March when he sent his triple protocol including zinc (along with detailed reasons for each part) to doctors with a cc to President Trump and Mark Meadows. After that he and Dr. Fauci mentioned zinc once or twice and then only mentioned HCQ, subsequently government experiments were conducted on VA hospital veterans (I think some died) with HCQ, but with no zinc. Dr. Z clearly stated his protocol was for early, pre-hospital use. To date, I don’t think any recognized tests have been completed that included zinc. However several including high priced Remdesivir have gone forward (proposed costs of $1,000 or more. Dr. Z’s treatment for 5 days costs $20. Draw your own conclusions.