Monkeypox is almost nothing like COVID-19. Among the many differences — fortunately, for a world weary of the pandemic — is that monkeypox is far less transmissible. So although a monkeypox case was identified Wednesday in Massachusetts, along with a handful earlier this month in Europe, infectious-disease experts say it won’t mean another global health crisis. Yet monkeypox is a serious disease, well worth monitoring so it can be contained with the standard tools of public health. Chief among them, in this case, are vaccines (yes, there already is one) and isolating infected people. Monkeypox…