Contagion/Fridge

Fridge Brilliance

The revelation that Krumwiede falsified the Forsythia cure puts a scene where he refused to give an infected friend Forsythia into a whole new light.

Krumwiede's inclusion in the film. Whether considered New Media Are Evil or a Conflict Ball is seemingly left up to the viewer. But when you stop to consider it, Krumwiede can be considered a personification of the rumours flying around during the Swine Flu outbreak that the vaccine was an attempt to modify the recipient patients' DNA for the New World Order or whatever other shadow organisation is allegedly involved. Also works for similar individuals that claim the AIDS Retrovirals are what kills patients, rather than the disease. As opposed to a shadowy rumour nobody can pinpoint, we get Krumwiede trying to be a Magnificent Bastard, going as far as to fake both Infection and Cure by Forsythia.

Since Sun Feng's village used the placebo, they will assume that they are vaccinated. If they return to their daily lives, they will contract the disease and everyone, including the children, will die. Moreover, Dr. Orates will have no idea where the village is since she was blindfolded and rode a car with the windows covered, so it's highly unlikely she'll be able to get there before it's too late.
When Doctor Mears gets sick in her hotel room, she immediately asks for the names of everyone who has ever cleaned her room or brought her food. Even if she gave it to just one of them (and not the other way around) it's likely that, due to the high communicability rate of the disease, and the fact that hotel staff serve multiple rooms, nearly everyone in the hotel has now been infected.
Krumwiede says that the real cure could have bad effects and cause death farther down the line. He's supposed to be grasping for some justification to explain why he would lie about the cure. However, since the researcher injected herself to make a cure without clinical trials, he could possibly be completely right.