However, while weekly cases are at their lowest since February, deaths are not falling as quickly, Tedros told journalists in Geneva.
"The number of deaths reported last week was similar to the previous week, and the global decline masks a worrying increase in cases and deaths in many countries," he explained.
"With the least access to vaccines, diagnostics and oxygen supplies for the critically ill, a steep increase in Africa is especially concerning," said the WHO chief.
A recent Lancet medical journal study showed that despite having fewer reported cases than most other regions, the continent has the highest mortality rate among critically ill COVID-19 patients.
And evidence suggests new variants have substantially increased transmission globally.
"That means the risks have increased for people who are not protected, which is most of the world’s population," he stated.
"At the G7 Summit on Saturday, I said that to end the pandemic, our shared goal must be to vaccinate at least 70 per cent of the world’s population by the time the G7 meets again in Germany next year," Tedros asserted.