In BSL II labs, as it is explained without the jargon, you change your footwear in between two doors. At 10:05, we see that Carla changes shoes after crossing both the levels. Levels of Biosafety are not followed.
At 42:26, Pauline says that temperature goes down if fluids and antibiotics work. Fluids and antibiotics don't reduce temperature.
At 42:30, Pauline talks about fluids, but IV line is not visible.
When Olly writes his phone no. on his windowpane and shot cuts to Maddy and back, we can clearly see that the last four digits (0117) are not written by Nick Robinson.
She would not have had identification and thus not been able to board a plane to fly to Hawaii.
At 41:15, when Carla's audio is "you shouldn't be her doctor too", her lips move different.
When we hear Olly's voiceover reading the last email he sent Maddy, what he says doesn't match what is written and visible on screen.