Can't find plagues in particular, but here are numerous mentions of disease:
As it was, much of his skill went into just keeping things together as the influx of new People was dealt with and they tried to keep the food and disease situation under control.
The warm rains had remained, but they had taken a bitter turn in recent years, the timing just right to promote the growth of biting insects. The People tried to control it, but sickness had broken out in the core territories. The king fresh from inheriting from the great Gonwyllmyn and then the heir had passed away far too close together, leaving political gygo and madness. Many had fled the core territories for places like the Western Wall, which had blunted the worst of the disease spread, but it had still done considerable damage.
Of course, despite owning the future, the future itself was rather unsettled. While the weather wasn't as bad as it had been in past years, settling into light but extended warm rains, it had caused a flourishing of the kind of conditions that both biting insects and demons of disease loved. Deaths had risen considerably, starting of course with the weakest members of the People, their children.
Speaking of developments, both Valleyhome and Sacred Forest were becoming increasingly empty as more and more people died of disease or were forced to leave for the countryside to work farms, orchards, and pastures that needed additional bodies for one reason or another - either disease or requiring labour to undo weather damage.
None that are especially recent, but if anything that would suggest we were doing BETTER at handling it in recent years, not worse.