I recently finished After the Plague, a lecture series by Simon Doubleday, a professor at Hofstra. The pandemic of the lectures is the Black Death of the 14th century. As with the physicians of spring 2020 who harmed COVID-19 patients by putting them on ventilators (today we realize that most would have done better if they’d stayed home with an oxygen bottle), doctors in 1349 often made plague patients worse and certainly had no effective treatment to offer. As with the fanatical sanitizers of today, public health officials back then tried to stop the pandemic by cleaning up the filthy streets. Ultimately, just as with SARS-CoV-2, the pathogen killed nearly everyone that could be killed despite the best efforts of the doctors and officials.
Professor Doubleday relates that the lack of effective remedies did not reduce public confidence in the experts. In fact, physicians made more money, officials got more power, and both classes of health experts got more prestige even as 50 percent of the population was being felled by Yersinia pestis.
In common with other scholars, Professor Doubleday relates that the reduction in population resulted in a tremendous increase in wages for the survivors (see Immigration is the Reverse Black Death?) due to the reduced supply of labor.