dose with the same specific
vaccine that they have chosen to have protection.
This was stated by
World Health Organization (WHO) for Bulgaria. "One
vaccine cannot be given and then another, at least because there is no clinical evidence that it will be effective and a person will be protected," he said.
The expert commented that the whole discussion about the AstraZeneca
vaccine was political, influenced by "other factors", because it is a
vaccine that has proven its effectiveness.
The comment was in connection with yesterday's announcement by the Minister of Health that the Portuguese Presidency of the EU proposes to limit the use of AstraZeneca entirely to people under 60 years of age.