World Health Organization Director General John Dr Tedros Adhanom Ghebreyesus today urged world leaders to curb the "daunting" surge in new crown cases by increasing vaccination and public health measures. "We are at a very dangerous stage of this pandemic," he warned, as delta variants quickly become the major new coronavirus strain in many countries.

"In countries with low vaccination coverage, the terrible scenario of hospital overcrowding has become the norm once again," he said at a twice weekly news conference. But no country is out of the woods yet. "

Adjust your strategy carefully

Dr Tedros Adhanom Ghebreyesus explained that COVID-19's Delta variant is "dangerous" and will continue to evolve and mutate, which requires constant assessment and "careful adjustment of public health response".

"Delta variants have been found in at least 98 countries and are spreading rapidly in countries with low and high vaccination coverage at the same time," he warned

In response to a reporter's question, who's technical director for the new crown pandemic, van kerkov, cautioned that the delta variant has been evolving since it first appeared.

"The nature of the virus is evolution," she predicted. There are currently four variants of interest that we are tracking: alpha, beta, gamma and delta. They will continue to evolve: there will be more mutations, more mutations will be detected, and some of them will be noteworthy. "

Van kerkov said experts are currently tracking the "sublines" of the delta variant and are urging countries to expand their genome sequencing efforts.

Two options

At the same time, the head of who explained that countries "basically" have two ways to curb the surge of new cases.

"Public health and social measures such as strong surveillance, strategic testing, early case detection, isolation and clinical care remain critical," said Dr Tedros Adhanom Ghebreyesus. In addition, you need to wear masks, keep your body away, avoid crowded places and keep the room well ventilated. "

The second way, says Dr Tedros Adhanom Ghebreyesus, is through global sharing of protective equipment, oxygen, testing, treatments and vaccines.

"I have urged leaders around the world to work together to ensure that 70% of people in each country are vaccinated by this time next year," he said

He further stressed that this is the best way to slow down the pandemic, save lives, promote a real global economic recovery, and further prevent dangerous virus variants from "gaining the upper hand.".