Global COVID cases up again

THE World Health Organization (WHO) said it is closely tracking a Delta subvariant to determine whether it is more transmissible than the original strain, as COVID-19 cases are rising globally again.

The global health agency added that it is also examining whether people were more resistant to the particular subvariant, called AY.4.2, which has been detected in at least 42 countries.

“An increase in AY.4.2 sequence submissions have been observed since July. Epidemiological and laboratory studies are ongoing” to see if there was a change in transmissibility of the variant, or a decrease in the ability of human antibodies to block the virus,” it said.

The lineage has three additional mutations compared to the original Delta variant, including two in the spike protein — the part of the virus which latches on to human cells.

According to data uploaded to the GISAID global science initiative, some 93 percent of all detected cases of the subvariant were in Britain.

The lineage accounted for an estimated 5.9 percent of all Delta cases reported in Britain in the week beginning Oct. 3.

The WHO also said that as a proportion of all infections, an increase in the number of cases among those aged under 25 had been reported since early July, particularly in the European and Western Pacific regions.

The reason could be that older people are more likely to be vaccinated, or that young people are more likely to be mixing socially.

It could also be that the virus is circulating in schools with more young people back in classrooms.

The WHO said it had data on the gender of 123 million recorded COVID-19 cases. Of these, 51 percent were female. But males accounted for 58 percent of deaths.

The WHO said that among those aged over 65, the death rate has plummeted since September 2020.

That is likely because more people in the age bracket have been vaccinated but also improved clinical care.

It said that 47 percent of the world’s population has received at least one dose of a COVID-19 vaccine.