(For all of these comments, take these resources as a lower-intensity recommendation than other things on this list, since these are selected based on the criteria of “things that seem relevant to this topic” rather than “things I found particularly interesting”.)
Under Solutions to deal with misinformation, Tara Kirk Sell at the Johns Hopkins Center for Health Security has done a bunch of related work (her list of publications includes things like a National Priorities to Combat Misinformation and Disinformation for COVID-19 and Future Public Health Threats: A Call for a National Strategy and Longitudinal Risk Communication: A Research Agenda for Communicating in a Pandemic). She was also interviewed for the 80,000 Hours podcast in May 2020, though I suspect her thinking has evolved since then.
(For all of these comments, take these resources as a lower-intensity recommendation than other things on this list, since these are selected based on the criteria of “things that seem relevant to this topic” rather than “things I found particularly interesting”.)