Multiple countries in Europe are showing an increase in infections, fueling concerns about the possibility of another global surge. The United Kingdom, the Netherlands, Germany, Switzerland and Italy were among those that saw an upswing in cases this past week, according to data from Johns Hopkins University.

The European surge also comes alongside conflict in Ukraine after the Russian invasion, leading to rising concerns about a public health crisis in the region sparked by densely crowded shelters and forced travel across borders. The WHO said earlier this month that the conflict may cause a surge in infections, straining scarce resources and contributing to more suffering and death.

BA.2, known as the “stealth” omicron variant, is making up a growing number of cases in some countries, and some studies show that it may be up to 30% more transmissible than the original omicron variant. China just locked down 52.5 million people to try and stop the spread of BA.2 stealth omicron. On March 15, China issued city-wide lockdowns in place in Shenzhen, affecting 12.5 million people, Dongguan (10.5 million), and Langfang (5.5 million), and locked down the whole province of Jilin, affecting 24 million. That’s 52.5 million people.

Cases of BA.2 made up an estimated 11.6% percent of cases in the United States as of March 5, 2022 according to CDC data, up from 6.6% February 26, 2022. In the United States hospitalizations are on the decline but this country has always lead the world in the number of cases and deaths. Only 44.3% of the U.S. population has received a booster dose so this country is ripe for another surge.

Omicron which was supposed to be a “milder” variant has killed more people than the Delta variant. World wide the number of deaths from COVID-19 is over 6 million. A new study found that the actual number may be 3 times higher, up to 18 million dead.