This week Denmark announced that would stop using the Oxford / AstraZeneca vaccine. Did with a statement in which he recalled the positive evaluation of the European Medicines Agency (EMA) on the serum: “I understand if other countries in a different situation continue to use it. If we were in a completely different situation […] I would not hesitate to use it, “said Søren Brostrøm, Danish public health officer. His words remind us that context is important when managing a public health crisis. Also communication: although there are no universal answers, do not explain why different paths are taken can generate mistrust and jeopardize immunization campaigns.