German Chancellor Angela Merkel and French President Emmanuel Macron urged fellow EU leaders on Thursday to take a firmer line on travel from countries outside the bloc, such as Britain, to combat the Delta variant of the coronavirus.
Merkel, arriving in Brussels for a European Union summit, said she would lobby for a more coordinated approach, particularly with regard to letting tourists in from regions where virus variants were widespread.
"We are obviously concerned about the Delta variant," she told reporters.
Macron told EU countries to be extremely vigilant about the variant, first identified in India, which is highly infectious and appears to affect people who are not fully vaccinated.
Macron said the 27-nation bloc needed to take coordinated decisions on opening borders to people from other countries.
The warnings came as British Prime Minister Boris Johnson hinted that the UK was close to permitting unrestricted travel abroad for fully vaccinated people.
EU governments have agreed on a "white list" of 13 countries, including Australia and the United States, for whose residents travel restrictions should be lifted. Noticeably absent is Britain, on which travel policy is mixed.
France and Germany require visitors from Britain to quarantine, while Portugal and Spain, who rely on British tourists, do not. In the Lisbon region, over half of new COVID-19 cases are of the Delta variant.
The recent jump in infections there comes around a month after tourism-dependent Portugal opened to visitors from the rest of the EU as well as Britain.
Portugal's foreign minister said on Wednesday that the country had not been careless when it opened its border to British tourists, after Merkel blamed the recent spike of COVID-19 infections on lenient travel rules. All British visitors must present a negative COVID-19 test on arrival.
Portuguese Prime Minister Antonio Costa said EU leaders would discuss controls on entry from third countries, specifically Britain, adding that Portugal had followed the line agreed by EU governments.
He added Merkel was right to say that coordinated action was required, particularly as travel across borders within the EU eased.