The U.S. is doing very little to prevent this. A lot of people, especially elderly people, will likely die.
It will also likely have a severe impact on the market. The sooner we can all accept this and prepare the better.
Not just the market - the real economy.
At this point, what realistically could the US do to prevent this? It will continue to spread in other countries, and there's nothing the US can do about that. We can implement more severe travel restrictions, but that has its own issues and it's not recommended by the WHO. That will only be effective for a period of time in the beginning of the virus spread, and they are basically doing that afaik
Im no expert, but besides providing financial or medical aid to to the countries fighting the virus, and helping developing a vaccine/cure, I'm not sure what the US should be doing prevention wise
1. You smooth out the cases that end up in hospitals and ICUs
2. You give more time for a vaccine to be developed and deployed.
3. You reduce the economic impact.