A surge in coronavirus cases has been recorded in Senegal, Belgium and Myanmar as the World Health Organisation registered a 10 per cent increase in global infections in the last week.
Senegal is experiencing an "unprecedented" surge in COVID-19 infections, the health ministry said on Wednesday, after reporting a new daily record of 733 cases.
The previous record was 529 cases recorded on Sunday.
"The situation is unprecedented. We have never seen such an increase in cases," health ministry spokesman Mamadou Ndiaye said.
"Measures must be taken urgently to reverse the trend... We hope that more energetic measures will be taken well ahead of Tabaski (Eid al-Adha)," Ndiaye said, referring to the Muslim holiday that will be celebrated next week.
The holiday, the most important of the year in Senegal, is celebrated with large family gatherings.
There are currently no measures in place to restrict such events.
The ministry said more than 25 per cent of the 2854 tests carried out in the past 24 hours came back positive.
Senegal has reported 47,596 cases and 1203 deaths since the start of the pandemic.
Coronavirus infections, driven by the delta variant among the young, have almost doubled over the past week in Belgium.
Virologist Steven Van Gucht said infections had tripled over the past three weeks and increased by 83 per cent over the past seven days.
The delta variant is now responsible for almost two thirds of infections.
More than half the cases are among the under-24 age group.
Unlike previous infection spikes, this one is not accompanied by a parallel rise in hospital admission or deaths, mainly because Belgium has one of the highest vaccination rates in Europe.
About 8 of 10 adults have had at least one shot by now
In the past week, Belgium, a country of 11.5 million, only had two deaths per day on average.
Meanwhile, military-ruled Myanmar reported record numbers of coronavirus cases and deaths on Wednesday as it suffers its most severe wave of infections so far
Citing health ministry figures, state-run MRTV said there were 7089 new cases and 145 deaths from COVID-19, a sharp rise from the previous day's figures.
The WHO reported there were nearly three million coronavirus cases globally last week, a 10 per cent increase that was accompanied by a 3 per cent rise in deaths, reversing a nine-week trend of declining COVID-19 incidence.
In its weekly report issued on Wednesday, the UN health agency said the highest numbers of new cases were from Brazil, India, Indonesia and the United Kingdom.
WHO says the easier-to-spread Delta variant has now been identified in 111 countries since first being detected in India and it expects the variant to become globally dominant in coming months.