Online market research panel members as controls in case–control studies to investigate gastrointestinal disease outbreaks: early experiences and lessons learnt from the UK – ERRATUM

Online population control surveys: A new method for investigating foodborne outbreaks

“…Online surveys can increase recruitment of controls in outbreak investigations, but these have typically been used with known exposed population cohorts [1,[8][9][10][11]. Online surveys to recruit controls in a non-targeted group of individuals (e.g.…”

“…In foodborne outbreak investigations, case-control and cohort studies are considered the gold standard epidemiological methods for hypothesis testing to identify a source. However, the resources required to conduct them are often prohibitive and recruiting appropriate controls is challenging [1, 2].…”