Deep into their third year of fighting the COVID-19 pandemic, local and state public health workers are battered, depleted and, in many places, demoralized. And now, they face a rapidly spreading new virus: monkeypox. The response requires delicate political maneuvering and already has run into shortcomings in testing, vaccines and anti-viral treatments — similar to the experience with COVID-19. Some public health authorities worry about the continued ability of an exhausted and perennially underfunded public health system to meet multiple threats at once. “Our staff is very professional and d…