OKLAHOMA CITY (AP) — Tulsa health officials on Wednesday reported a record spike in coronavirus cases in the county, but said it's too soon to attribute any increase in infections to President Donald Trump's campaign rally at the weekend.

"We're really going to watch the next six weeks, because chances are there were people that were exposed over the weekend ... the incubation period is anywhere from two to 14 days," and the virus could be spread for weeks after that by those exposed during the rally, said Tulsa Health Department Director Bruce Dart.

Dart and Tulsa Mayor G.T. Bynum said the ne...