The new talk is about potential Covid vaccination passports. However, travelers to certain areas of Asia, Africa, the Middle East, and South America know vaccination requirements are already a thing.
Not only should you be up to date with all the standard vaccinations, when traveling internationally check what other vaccinations your destination requires. These may depend on where you live, where else you’ve traveled, and how long you will be there.
Also, consider getting the recommended vaccinations for the area. For example, Hepatitis A & B are rarely required but strongly recommended for most developing nations. Check your government’s travel health advisory (i.e., CDC for US residents, NHS for UK residents) for specific guidance on where you want to travel.
Don’t leave this one until last minute either. Some vaccinations need to be done at least a month before travel.