Who did COVID victims catch the virus from?

 Most all COVID patients in hospitals or on ventilators were put there by someone or someones who had not been vaccinated.

Given that police officers are forced in their jobs to go into below average sanitary situations -- taking whatever they pick up with them into other less than optimum sanitary conditions -- could that make any police force into a"super-spreader force", if not vaccinated?  Nothing snarky intended.
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Risk of taking the vaccine -- exact numbers unnecessary:
Let's just say half our population (cradle to grave) have gotten the vaccine -- 165 million -- at least one dose.  How many died from those needles?  Not even 100 died?  Be a gigantic story, if they did!
Let's just say one-quarter of our population -- 80 million -- has been exposed to the virus to the point where their immune system reacted.  700,000+ died.
Best odds?
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Those who wait for "more research" to judge the vaccine by will likely out wait the pandemic by the time their curiosity is satisfied -- will essentially wait for every epidemic to pass by before they ever get vaccinated.  Smart.