After updating the vaccine policies, Cunard and P&O have become the first cruise lines requiring mandatory vaccines against COVID-19 plus protection with booster shots, after the fast spreading of the omicron variant throughout the globe. All booked passengers intending to embark the Queen Mary 2 on 14th of January, were informed in a letter about the latest updates: "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."

In addition, it is stated in the letter that all passengers will be required negative COVID-19 testing prior to embarkation, with further details to follow. The companies offer their customers reschedule of the cruise or a cancellation with a full refund of the money. Currently, the line requires passengers sailing on Queen Mary 2 and Queen Elizabeth to provide proof of vaccination against COVID-19 as a condition of embarkation.