It's a really cool Batman graphic novel. 'Contagion' likely involves some sort of threat that spreads throughout Gotham. Maybe it's a disease or a new kind of villainous plot that Batman has to deal with. The art in Batman graphic novels is always great, and this one is no exception. It shows Batman at his best, using his detective skills to figure out what's going on and stop the contagion.
The unique premise of a contagion makes it special. It's not your typical Batman story just about fighting villains. It adds an element of mystery and danger that affects the whole city.
One common misconception is that all diseases are equally contagious. For example, the flu is highly contagious, spreading easily from person to person through respiratory droplets. However, some diseases like certain types of cancer are not contagious at all. Another false idea is that just being near a sick person always means you'll get sick. In fact, a person's immune system strength plays a huge role. If your immune system is strong, you may be exposed to a contagious pathogen but not become ill.
TPB comics usually refer to Trade Paperback comics. They collect a series of comic issues or story arcs into one volume for easier reading and collecting.
A TPB comic, or Trade Paperback comic, is a collection of comic book issues bound together in one volume. It's like a compilation of several related comic stories.
The idea for Contagion originated from real concerns and research about pandemics, but the specific plot and characters are fictionalized to some extent to make it more engaging for the audience.