People enjoy a meal in a restaurant during the nationwide reopening of the restaurants interior, in Lille, northern France, Wednesday, June 9, 2021.

PARIS — Paris tour operators see a ray of light with the promised return of tourists from the United States and elsewhere who are welcome in France as of Wednesday if they have been vaccinated against the coronavirus.

To be allowed in for tourism, Americans and other visitors from most countries outside of Europe will need to show that they have been fully inoculated against the coronavirus with vaccines approved by the European Union's medicines agency: Pfizer, Moderna, AstraZeneca and Johnson & Johnson (Janssen) vaccines means tourism isn't immediately coming back from the lucrative markets of China and Russia, which use vaccines not approved by the European Medicines Agency.