Okay, here's the conclusion of the paper (emphasis mine):

To date, studies on social violence, hate and disease have focused on less than a handful of pandemics – drawing parallels at times between the Black Death and cholera, in other places between syphilis and A.I.D.S.,and on occasion two or three other diseases. No one has gone beyond these few pandemics to chart comparatively the patterns of disease and hate. No one has compared the levels of violence or intensity of hate with different pandemics in different places and periods; instead, epidemics’ potential for hate has been levelled, so that blaming, perhaps but not necessarily implicit in popular names given to diseases, is placed on the same plane as the genocide of Jews across vast regions of Europe during the Black Death and again of Eastern Jews with twentieth-century typhus. Furthermore, no one has factored to what extent certain characteristics of diseases – rates of mortality, rates of fatality, quickness of death, newness of a disease, mysterious causes, degrees of contagion, gruesomeness and horror of signs and symptoms – determine whether a wave of collective hate and violence is likely to ensue. Instead, both in the popular imagination and the scholarly literature, violent hatred and even pogroms are held to have been pandemics’ normal course, supposedly engrained in timeless mental structures – to use René Baehrel’s words again, ‘certaines structures mentales, certaines constantes psychologiques’.123 Further examples of such scholarly opinion can easily be provided,124 but were these the constant consequences of epidemics? According to my survey thus far, they were not: the Black Death, typhus in late nineteenth- and twentieth-century eastern Europe, plague in the sixteenth and seventeenth centuries (although only in some areas), cholera in places in the eighteen-thirties, in Italy as late as 1911, in Peru andVenezuela to the nineteen-nineties, in Haiti to today, sometimes smallpox, sometimes Yersina pestis, and perhaps to some extent A.I.D.S. in our own time were exceptions but hardly the rule. No matter how contentious the underlying social and political circumstances,how high the body counts, how gruesome the signs and symptoms, how fast or slow the spread or course of a disease, pandemics did not inevitably give rise to violence and hatred. In striking cases they in fact did the opposite, as witnessed with epidemics of unknown causes in antiquity, the Great Influenza of 1918–19 and yellow fever across numerous cities and regions in America and Europe. These epidemic crises unified communities, healing wounds cut deep by previous social, political, religious, racial and ethnic tensions and anxieties. On occasion, it is true, pandemics did split societies with accusations and violence. Historians, doctors and psychologists have yet to map when and where they happened, to measure their intensities, or to examine the complex interaction of factors to explain why some diseases were more or less persistently the exceptions. They have yet to raise the questions within a comparative framework of world epidemics.125 It is now time to construct the databases of disease and hate.

The rest of the paper documents many epidemics he looked at (going back to before common era Athens and Rome) which did not end up in the expected violence. I think I have a more balanced view of whether it's possible for excess panic to cause major problems during a pandemic now, and I'm still surprised that there isn't more.

I'd like to see

a) a study of how much those incidences of outgroup violence were primarily a result of panic (as opposed to eg. opportunists, since during the Black Death Christians appeared at least as invested in confiscating a lot of possessions from Jewish people) and

b) a similarly comprehensive study of how many epidemics/pandemics resulted in bad things happening from insufficient worry or officials hiding information.

I also weakly suspect that some cases of a) and b) are tied together, eg. excess panic/panic synchronization happening because officials have lied about the situation earlier on.