Covid-19 flares up again in the UK.
And this time, the main cause seems to be the Delta variant.
"It's clear that holidays as normal or travel as normal was never going to be the case bearing in mind the rise of particular variants, most notably the delta variant."
Britain saw an upsurge in Covid-19 infections with the country's daily caseload hovering around 10-thousand for the past five days.
Considering that the country was seeing fewer than 2-thousand daily cases in early May, the latest figures show a clear upward trend in virus cases.
Experts are attributing the spike in infections to the Delta variant, the highly contagious strain of Covid-19 that was first found in India.
Up until last Wednesday, more than 75-thousand cases of the Delta strain were found in the UK, with cases of the variant rising almost 80-percent in a little over a week.
The Delta variant has been spreading across the borders of other countries as well.
World Health Organization on Friday said that the Delta variant is becoming "the globally dominant variant of the disease."
And experts suspect that the Delta variant will be the most dominant strain in Germany by this autumn.
China has also found Delta cases within its borders, and is not taking any chances.
It launched citywide testing on Monday in the major manufacturing hub of Dongguan in Guangdong Province, after finding a Delta case among its residents.
Government authorities have cordoned off the entire city and banned residents from leaving unless they produce a negative test result within 48 hours of departure.
Some 20-thousand university staff and students in Dongguan have also been quarantined within their campus premises until further notice, after one of the students have tested positive.
Kim Yeon-seung, Arirang News