As of 1 February 2022, the requirement set by the European Union Regulation on the validity of the digital Covid-19 vaccination certificate for entry into the Member States of the European Union, the European Economic Area (Iceland, Norway, Liechtenstein) and the Swiss Confederation enters into force. The vaccination certificate is now valid for nine months for entry into these countries, regardless of the name of the vaccine received (for vaccines approved by the World Health Organization and the European Medicines Agency), the National Health Service (NHS) informs. The requirement of the nine-month or 270-day validity period applies only to entry, while the requirements for the validity period and use of the vaccination certificate…