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Europe Watches With Worry As Delta Variant Spreads Fast In The U.K. And Lisbon

A tram drives through an empty downtown Lisbon, June 18. Travel in and out of the Lisbon metropolitan area was banned over coming weekends as Portuguese authorities respond to a spike in new COVID-19 cases in the region around the capital. [Armando Franca / AP]
A tram drives through an empty downtown Lisbon, June 18. Travel in and out of the Lisbon metropolitan area was banned over coming weekends as Portuguese authorities respond to a spike in new COVID-19 cases in the region around the capital.

A worrying spike of coronavirus infections in Europe is being driven by the Delta variant, according to global health leaders, even as immunization rates in some countries are on the way up.

Increased cases reported in the U.K. and Portugal have forced officials to reimplement lockdown restrictions or hold off on lifting pandemic mandates. Officials in France, Germany, and Spain say they are closely monitoring clusters of infection tied to the Delta variant.

The strain, also known as B.1.617.2 was first detected in India. It is now "well on its way to becoming the dominant variant globally because of its increased transmissibility," World Health Organization's chief scientist Soumya Swaminathan said Friday.

Pfizer-BioNTech and Moderna vaccines have been shown to be effective against this strain.

A recent study from Public Health England showed two doses of the Pfizer-BioNTech vaccine were 88% effective against symptomatic disease from the Delta variant compared with 93% effectiveness against the Alpha variant, the variant first detected in the U.K. The vaccine only provided 33% protection after just one dose.

Still, in the U.S., the Centers for Disease Control and Preventions shared similar concerns of the spread of the Delta strain. The CDC last week declaredit as a "variant of concern," meaning it poses a significant threat to unvaccinated people.

The U.K. and Portugal report Delta-led surge

British Prime Minister Boris Johnson announced last week a delay in plans to lift the final elements of the nation's lockdown restrictions, citing "a faster than predicted" spread of the strain.

Originally set to end Monday, Johnson said restrictions on businesses and large events will remain in place until July 19.

In the U.K., data shows 99% of sequenced and genotyped confirmed coronavirus cases across the country are the Delta variant, according to Public Health England.

The government's weekly data as of June 18 showed numbers of the Delta variant in the U.K. have risen by 33,630 from the week prior last week to a total of 75,953.

This is despite the nation's high immunization rate: 59.5% of the population are fully vaccinated from the coronavirus. A reported 81.6% of the population have received one dose, according to government data.

Dr. Jenny Harries, chief executive of U.K. Health Security Agency said in a statement, "The increase is primarily in younger age groups, a large proportion of which were unvaccinated but are now being invited to receive the vaccine."

On Friday, the government announced every adult over the age of 18 are eligible to receive a coronavirus vaccine.

Authorities in Portugal banned all weekend travel in and out of Lisbon to cut down on any further spread of the virus to other parts of the country.

Portugal's National Health Institute reported this weekend the Delta variant is shown to be in at least 60% of new cases in the nation's capital, Lisbon. The country reported over 1,000 new COVID-19 cases for the fourth day in a row on Saturday, according to Reuters.

Spain, Germany, and France watch with concern

Cases tied to the Delta strain are reported as being low in in France, Spain and Germany, but each nation's health minister warn the Delta variant is perceived as a real threat.

As of June 14, Spain reported the Delta variant accounted for less than 1% of cases.

Spain's Catalonia region, in the northeast, reported 20% of new cases were linked to the Delta strain, the region's health official Josep Maria Argimon announced at a press conference last Thursday.

Argimon warned that Delta could be the predominant variant throughout the country in two to four weeks.

That hasn't stopped the nation from moving forward with lifting some COVID-19 restrictions. Spanish Prime Minister Pedro Sánchez announced Friday masks would no longer have to be worn outdoors in the country starting June 26.

Germany's Health Minister Jens Spahn said it's not if the Delta variant becomes dominant, but "when and under what conditions."

France reported that 2-4% of virus samples being analyzed in the country showed the Delta variant, according to France's Health Minister Olivier Véran.

"We are in the process of crushing the virus and crushing the pandemic, and we must in no way let the Delta variant get the upper hand," Véran said last Tuesday, according to The Financial Times .

"You might say this is still low but it is similar to the situation in the UK a few weeks ago," he said.

Copyright 2021 NPR. To see more, visit https://www.npr.org.