Extensive procedures
A possible vaccine developed by the pharmaceutical company Inovio, with the support of the Bill and Melinda Gates Foundation, has already received formal approval to be tested in humans.
This is a move towards a second phase, after the Moderna laboratory in Massachusetts shipped a first batch of test vaccines in mid-March.
Even if these vaccines were confirmed to be effective after the procedures, it would take up to one year and 18 months for formal approval to be applied to the public.
Without taking into account the permits that should be approved in each of the countries before the vaccine can be sold to the public or distributed in health centers.