Two cases of slotxo the Indian variant of Covid-19 have been found at a West Bromwich school.
The individuals at Ryders Green Primary are said to have no recent foreign travel history, Sandwell Council said, adding they tested positive "several weeks ago" and "all appropriate infection prevention and control measures were taken at the time".
The council's public health team said it was now working with Public Health England to test 120 children in two year groups and about 10 staff.
The B.1.617.2 variant, first discovered in India, is believed to spread more easily. However, there is little evidence to show it is capable of overcoming the vaccine.
“Our work with the pupils, families and staff attending Ryders Green School will help us to identify and contain the variant," said Dr Lisa McNally, Sandwell's director of public health.
"We cannot be complacent, we all need to do everything we can to stop the spread of Covid-19 and to keep ourselves and others safe."