<p>The investigation was conducted between 30th March and 5th April 2022 at Sandwe primary school in Lusangazi District. We defined a case as a school child who on clinical examination had an intense pruritic rash on at least one typical site with or without a burrow or a positive skin scraping. We reviewed health facility registers, assessed skin lesions using standard skin examinations, collected samples of skin scrapings and conducted environmental assessments. We performed descriptive statistics on the data and calculated the attack rates at 95% confidence interval.</p>