While chasing after Doug, who ran into the ocean to evade Dr. Dana (Michael Parks) and the deputy sheriff, Dr. Dana has his suit jacket on, but when he gets to the water, he dives in without it.
When the Dr. Dana is talking with the doctor at the hospital regarding Mrs. Fletcher's illness, the hospital doctor says he diagnosed her with viral pneumonia and administered penicillin. Penicillin is ineffective against viral infections.
When the doctors view the anthrax bacteria under the microscope, it demonstrates motility (motion). Bacillus anthracis in a non-motile microorganism.
Near the beginning, Harry Slater falls out of the vehicle along with his bongo drum when the driver swerves to avoid the car in front of her. He rolls downhill and is stopped by a fence. The shadow of a camera platform and cameraman is visible at the bottom of the screen when Harry hits the fence.
The three punks from the hot rod, Colton, Sykes, and Lynch are referred to as kids by the adult characters, but the actors who played the supposed "teenagers" were between 21 and 26 years old and looked far too old to be teenagers.