According to Congressional testimony in March, a few million dollars
In the linked article one of the researchers working on a SARS vaccine told Congress they felt they were close in 2016, but the funding dried up. The article is pretty light on details, but he basically said SARS-CoV2 is costing us tens of billions of dollars, and a few million four years ago we could have finished getting a Coronavirus vaccine.
(NOTE - there are 7 Coronavirus, 4 of which are a common cold. The other 3 are SARS, MERS, and SARS-CoV2.)
I’ve never seen any claim one vaccine will be effective against all three, but there is about 90% commonality between SARS and the current virus.
Fauci and others seem confident we will eventually have a vaccine. There’s no guarantee but I don’t think Covid 19 will end up being a endemic.
FWIW, in my limited research (dozen articles) I could not find any evidence vaccine development for SARS or MERS ever reached human clinical trials. I saw ferret and mice trials, and in the case of SARS, some of the trials caused mice to become much worse.
ETA - found a few detailed study designs but even using the clinical trial number to search, could not find the actual study which was to have followed.
But there a few articles I couldn’t access because they were in medical journals behind paywalls.
<< FD: CFO/CPA, did not stay in a Holiday Inn, not a doctor, not a HCW, not a public health official, and I possess only a layman’s understanding of any of this stuff.