You searched for: “nosocomephobia
nosocomephobia (s) (noun), nosocomephobias (pl)
An excessive or strong fear of hospitals: Some people have valid reasons for having nosocompephobias because sick people are sent to medical centers, and those who are weak when sent there become weaker while being there, and are highly susceptible to further infections.

Helena developed nosocomephobia because, when she went into the local infirmary in a healthy condition for her back operation, she contracted an infection, and then she needed special medical treatment to recover from it before the doctor could operate.