Philosopher,
Not sure what your referring to about more than one treatment, in this chat there was a specific treatment that was mentioned, which has not yet been proven to be effective.
Of course there are treatment protocols that have proven to be effective, they are also being used on Covid patients.
With regards to the vaccine, which seems to be what you are alluding to with the prevention protocol. Yes, there are breakthrough cases, but most of them are mild in nature not requiring hospitalization.
Furthermore, the vaccine was not being sold as 100% effective, and the need for boosters is not yet clear.
The prevention method is not new, its been used since vaccines have been invented and has been the mainstay of preventative medicine. Its wildly effective if done safely and uses the rules of Hashems nature which build immunity which in return allows the body to successfully fight the invading virus.
As if yet, there is no effective treatments for viral infections, so vaccines seem to be our best bet at this time.
With regards to deaths and side effects, Like everything else there are side effects, although they are extremely rare, to the point that they are deemed safe.