If you’ve ever caught the flu from a colleague or came home with a cold after you stood next to someone who was constantly sniffing their nose on a crowded bus, you have probably come to the conclusion that we are walking disease vectors.
Even so, while you might not be aware of some of the most common ailments you can get from your close contact with others, there are many conditions that are contagious and you weren’t aware of them. Before you put yourself in harm’s way, at least make sure you know which surprising conditions you might get.