PITTSBURGH (AP) — Health officials are warning western Pennsylvania residents that a second raccoon found in the same Pittsburgh neighborhood has tested positive for rabies.

The Allegheny County health department says the raccoon brought to one of its facilities Thursday was found on the edge of the Morningside/Stanton Heights areas, the same area a rabid raccoon was found earlier in the week. Another rabid raccoon was found in Mount Lebanon.

Rabies is a virus transmitted by an animal bite or scratch; exposures are almost always fatal when left untreated. Residents are being warned to avoid stray animals and wildlife, even if the animals appear healthy.

Officials say this is the 20th rabid animal reported in the county this year: there have been nine raccoons, seven bats, two cats, a groundhog and a fox.