The new variant is much more capable of asymptomatic spread.

4.2 variant display no common Coronavirus symptoms.

The Delta variant shows typical symptoms in 46 percent of people infected.

The spread of AY 4.2 and other new variants comes alongside new data suggesting English coronavirus rates have risen to similar levels than we found in the peak of the second wave, seen in January of this year.

The Delta plus variant was first identified in India, but has quickly spread to England, Japan and the United States.

The US Center for Disease Control is carrying out research to determine the ability for the Delta Plus variant to evade antibodies produced by the vaccine