Will the economy be rapidly vaccinated against the virus?

Encouraging news about the discovery of an effective vaccine against coronavirus saw equity markets sky rocket yesterday. This reaction reflects a scenario in which the global economy could be expected to rapidly return to 100% of its pre-virus activity conditions - whereas, in the current situation, most countries have recovered just 90-95% of their capacity, with little hope of making up the rest before several quarters. We examine here (in a somewhat fictional mode, as this va...