The following is a list of tour companies that, at press time, were known to require all tour members to be vaccinated:
• The Travel Corporation (ttc.com) family of brands, including Trafalgar, Costsaver, Insight Vacations, Contiki, Uniworld and others.
• Globus, Cosmos, Monograms and Avalon (866/755-8581, www.globusjourneys.com).
• Intrepid Travel (800/970-7299, www.intrepidtravel.com).
Other tour companies may be requiring vaccines. Ask your travel agent or the tour’s sales agent or check pre-departure literature for requirements of any tour you wish to book.