Dream of contagion is real. This writing prompt is very true.
There are women and men with infectious diseases. As they are sickly, they lose their abilities to work or even function to care for themselves. Running short of money, they hook lovers who might pay for their living expenses and take care of them. Due to the infectious nature of diseases, they become like Black Widowers who kill their mates.
If you dream of contagion, it could be a warning type of dream. The meaning can only be understood by you, because you know your present circumstances, and how the dream speaks to you.