The painting with vertical orange swatches in Rose's post-surgery room gets turned on an angle and is splattered with blood following the first attack. Later, it is back to square on the wall and the blood has disappeared.
When Rose is put into the garbage truck, there are plastic bags for trash back there, but when the mechanism is started, there aren't any bags.
In one scene an infected civilian jumps onto Hart's car and is shot, followed by bio-warfare suited soldiers spraying disinfectant on his car before permitting him to continue driving. In the next scene, the windshield is completely clean, with no signs of blood or disinfectant.
The doctor takes a skin graft from Rose's leg. When we see him peel the graft off, it's clearly 5 or 6mm wider than the wound it's taken from, almost like a piece of latex or cloth being peeled off the wound.
Numerous signs are seen written in English, including government buildings and vehicles. In the Canadian province of Quebec, where the film is set, by law all of these signs would be in French.
This movie was filmed prior to the introduction of Quebec's "language laws" requiring the prominence of French on signs. The film itself was shot in Montreal, so all of the signs are authentic.
This movie was filmed prior to the introduction of Quebec's "language laws" requiring the prominence of French on signs. The film itself was shot in Montreal, so all of the signs are authentic.
In the opening sequence, as the credits roll by, a motorcycle shot is using one location twice. This is when the bike is turning-off the main road onto the side-road, the same side-road is seen twice. Note the placing of the STOP sign, the broken white "fence and the left-hand bend.
When the accident at the beginning of the movie happens, it's obvious that the bike went up like on some sort of ramp to make the jump shown.
Girl in the freezer is obviously alive and breathing when she is shown.
When a man shoots an infected man at a car Hart is driving , he would shoot Hart too the way he is aiming.
After Mindy leaves Rose writhing in pain on the bathroom floor, she's shown in the subway station. As the train comes to a stop, three women on the train on the left side of the screen (one of whom is wearing a bright red hat) notice the camera and look into it.
Just before Rose is seen exiting the Eve Theatre, the marquee is shown, and it says that "Party Swapers" is one of the films playing there, but the poster in the window below shows the film's title correctly as "Party Swappers".
When Hart's car is attacked by a crazy, and a clean-up crew shoots and disposes of it, the cameraman who is shooting the "through the windshield" shots is clearly visible in the back seat of the car.
When Rose enters the shopping mall, the camera, the lights and the film crew are reflected in the glass doors.
When Rose is wandering through the streets at night, she enters a cinema hall. As she opens the glass door, a couple of crewmembers and spotlights are reflected in it.
The Canadian Soldiers in Montreal all have inverted US Army shoulder patches.