What are the symptoms of a reaction to hib vaccine?

See below:: Approximately 25% of children who receive the hib vaccine experience mild side effects such as pain, redness, or swelling at the site of the shot, while more serious reactions are infrequent. Studies have shown that children who receive the hib vaccine in combination with or at the same time as the dtap vaccine are no more likely to experience side effects than children who receive only the dtap.