The worst of the Omicron surge may be behind us.  “That’s clear looking at both the daily case counts and the wastewater that we track pretty religiously and have for the better part now of almost two years,” Governor Charlie Baker said Thursday. “The hospitalization rates are also coming down.” Cases are waning, and New England’s vaccination rates are among the highest in the country.  But don’t let your guard down just yet, experts say. Tens of thousands of infections will likely still be reported in the next few weeks as the curve slopes downward. The CDC ensemble model predicts that between Jan. 22 and Feb. 19, there could be nearly a quarter of a million cases of COVID reported in the state. Keep in mind: Our current case numbers are surely an undercount because of the widespread use of rapid tests, which are rarely reported to the state. Meanwhile, local researchers are "cautiously optimistic" about an Omicron sub-variant spreading rapidly in several countries around the globe.