NEW ORLEANS – Thank goodness the equine herpesvirus outbreak that began late last December at Fair Grounds was, in the scope of such things, minimal. Only one horse was seriously afflicted, and the actual spread of the more serious neurologic strain of the disease was quickly contained. But the effect on the Fair Grounds meet was fairly catastrophic. The whole track came under a state-mandated quarantine, meaning no horses could ship in to race, and at the situation’s peak, about 350 horses on the backstretch were quarantined in their individual barns and unable to race.