Booster shots will be required beginning in January.
Cruise Critic U.K. is reporting that Cunard has advised their booked sailing on the January 14th QM2 cruise will need to show proof of two vaccinations plus a booster shot. In a letter to guests the cruise line wrote "In order to travel on your voyage, all guests must be fully vaccinated with a booster vaccination at least seven days prior to travel."
"The definition of "fully vaccinated" being having completed an approved two dose Covid-19 vaccination course with a third booster vaccination (approved by the Medicines and Healthcare products Regulatory Agency (MHRA) or the World Health Organization’s Emergency Use Listing (WHO EUL)), or the approved single dose Janssen Covid-19 vaccine with a booster.
"A single or double dose of any other vaccine will not be accepted."
The letter further states all passengers will require negative COVID-19 testing prior to embarkation, with further details to follow.