Question: are the blisters in hand foot mouth contagious?
Answer: Hand, Foot, and Mouth Disease is Contagious Some people, especially adults, may not develop any symptoms, but they can still spread the viruses to others. The viruses that cause HFMD can be found in an infected person's: Nose and throat secretions (such as saliva, sputum, or nasal mucus) Blister fluid.