Derbyshire Healthcare NHS Foundation Trust
COVID-19; SARS-CoV-2; Schools; Transmission; Contacts; Testing; Secondary Attack Rate
adolescents, return to school, infection control compliance
SARS-CoV-2 infection, COVID-19, schools, transmission, students, teachers
Bacterial meningitis, group B streptococci, meningococcal meningitis, pneumococcal meningitis, surveillance