The vaccine won't be ready until next year. At best. Even if it takes months it could be worth it.
Anything short of "days" or "weeks" is frankly worthless right now.
If we want to take action, get our local governments to nationalize/commandeer a significant number of our lab and chemical capacity to get testing capacity up to where we can afford testing people who are asymptomatic, and not just those at risk or those who may have been exposed.
The bottleneck is not people, money, or technology. It is simply the incompetence of our leadership to get their shit together and make the hard decisions that need to be made to close down our borders and businesses and redirect our national efforts to the treatment effort.
For example. Governor Newsom should command the entire UC system to get every single professor and student capable of manufacturing reagents and running tests possible while they're closed down. Every business capable of manufacturing should be directing it to making the PPE for doctors and nurses. Healthy, low risk people should be conscripted and trained in respiratory treatment. High risk people should be sequestered, and those with exposure should be quarantined.
None of this is a tech problem or a medicine problem - it's a government problem. Only none of our nations have a Churchill or FDR to drive the efforts.
Two have been on the HN homepage this weekend. Check them out.