With Omicron’s surge peaking in some U.S. states, experts this week sounded a wary note of optimism that better times are weeks to months away, but they warn that prospects of an “end” are murky, with the likeliest scenario being one in which the virus shifts from pandemic to a more manageable endemic mode. Experts with the Massachusetts Consortium on Pathogen Readiness on Tuesday hailed increasing signs that the Omicron surge in the U.S. is following the pattern seen in South Africa, where the jaw-dropping increase in infection was followed by an equally stunning decline. Coronavirus ca...