Datganiadau blaenorol
COVID-19 Schools Infection Survey Round 4, England Bwletinau ystadegol
Initial estimates of staff and pupils testing positive for coronavirus (COVID-19) antibodies from the COVID-19 Schools Infection Survey across a sample of schools, within selected local authority areas in England. This Schools Infection Survey (SIS) is jointly led by the London School of Hygiene & Tropical Medicine, Public Health England and the Office for National Statistics.