Spain has raised its vaccination targets, and plans to have 70% of the population vaccinated in August. The Prime Minister has announced a more detailed schedule. If Moncloa’s forecasts are met, mass vaccinations will allow five million Spaniards to be immunized in the first week of May, 10 in June and 33 million in August, just over 70% of the country’s total population. The calculations have been encouraged by the arrival of larger shipments of the three available vaccines, as well as the landing of a fourth, the Janssen serum that does not require more than one dose. However, the ups and downs with the application of AstraZeneca threaten to complicate the logistics of the immunization plan. In any case, we review all the doubts that may arise about vaccination.