Even if it depresses in the summer months, it will return in full force next winter (see e.g. flu, common colds, etc).
Best case scenario a working vaccine is invented. But nobody currently has a proven working one (regardless of a few headlines to the contrary) and even if they did that would be 18 months minimum before mass manufacturing could begin.
What I am saying is "bomb shelter"-style hunkering down will likely be ineffective if there's a mass spread in your country because the disease would out-live whatever supplies you have.