Comparing public knowledge around value of hand and respiratory hygiene, vaccination, and pre- and post-national...

The COVID-19 pandemic spotlighted the importance of infection prevention and control (IPC) measures. Existing literature focuses on healthcare professionals, whereas this article explores changes in public knowledge of IPC, where knowledge is comparably sparse.

National surveys were conducted before (March 2020) and after (March 2021) the COVID-19 lockdown across England.

A telephone survey of 1676 adults (2021) and a face-to-face survey of 2202 adults (2020) across England were conducted. Key demographics were representative of the population. Weighted logistic regression with composite Wald P-values was used to investigate knowledge change from 2020 to 2021.

Compared with 2020, significantly more respondents correctly stated that infections can spread by shaking hands (86% post vs 79% pre; P < .001) and that microbes are transferred through touching surfaces (90% vs 80%; P < .001). More knew that hand gel is effective at removing microbes if water and soap are unavailable (94% vs 92%; P = .015); that when you cough, you may infect other people near you in a room (90% vs 80%; P < .001). Knowledge that vaccination protects others from infection also increased (63% post vs 50% pre; P < .001). There was also significant increase in those confident in their answers.

Knowledge of IPC measures was higher in 2021 than before the pandemic. Future public health hygiene campaigns should capitalise on this and emphasise that continuing hygiene behaviours, and vaccination can help prevent acquisition and illnesses with other non-COVID-19 infections, thus reducing the strain on the national health service.