STRENGTHS AND LIMITATIONS OF THIS STUDY
A strength of this study is that it collected data from four large samples, including the general population and men who are gay, bisexual or have sex with men.Data collection occurred over a short period (5 September 2022 to 6 October 2022) during the mpox outbreak.Limitations include that responses may have been affected by social desirability or recall bias, although the anonymous nature of the survey should mitigate this somewhat.Sociodemographic characteristics differed by sample, with participants recruited from Grindr and Meta being more likely to be working, highly educated, of higher socioeconomic grade, and have less financial hardship.We measured behavioural intentions which may differ from actual behaviours, but factors associated with intentions should still be validly identified.