Western European countries are scrambling to curb the much-feared second wave of COVID-19.
Spain, the country with the highest number of cases in Europe, is seeing cases surge in its capital, Madrid, which accounts for roughly one third of the country's cases.
Spain's health ministry warned on Monday that authorities might need to impose a broader lockdown in Madrid.
Some areas of the city are already under partial lockdown.
Madrid's regional government chief on Monday even requested the army's help to contain the outbreak.
France, which has the second highest number of cases in Europe, reported 13,498 new cases on Saturday, the most cases in a single day since the pandemic began.
The UK is seeing the number of new cases roughly double every seven days.
The country's chief medical officer has warned that the country could see 50-thousand daily cases next month, if it fails to flatten the curve.
"And you can see that by mid-October, if that continued, you would end up with something like 50,000 cases in the middle of October per day."
Germany reported 2,297 new cases on Saturday the highest daily number since April.
Munich's mayor on Monday announced tighter restrictions in the city, saying that people have to wear masks at all times when in crowded public places.
"In places where we have just seen crowds of people without masks at the weekend, a general obligation to wear masks may apply from Thursday onwards."
While the U.S. seemed to have been making progress since August, the weekly number of new cases in the U.S. rose last week for the first time after falling for eight straight weeks.
According to Reuters, new virus cases rose 17 percent for the week ending September 20th, and deaths rose 5.5 percent.
Health experts are attributing the rise to schools reopening, and contact during the Labor Day holiday.
Kim Jae-hee, Arirang News.