The compliance with covid 19 good hygiene only curb the spread of covid and I dont think it also protect people from others disease. However, I agreed that the casino owners will do everything possible to protect their visitors because they wont want the government to stop them from operating again but everything still depend on every individual or visitors level compliance.
Dirty hands are a huge number of different pathogenic bacteria. A very good invention - sanitizer with a content of more than 70% alcohol, it helps to kill most bacteria and viruses.
Now in all public establishments such as casinos, they are required to be installed within walking distance.
Cant read the link you provided but I want you to know that vaccine that is not acknowledge by WHO and CDC cant be use as Covid 19 vaccine.
WHO is the organization that allowed the spread of coronavirus around the world? WHO can something other than spend money coming from donations? It is not this organization, but Russia that delivered the Ebola vaccine to African countries and saved hundreds of human lives. Therefore, we do not need to talk about its approval.