HiB is transmitted by coughing or by direct contact with another child’s mucus or saliva. The latter situation might occur by a child sharing toys or eating utensils. The common precautions of washing your child’s hands frequently and staying several feet away from coughing children will help decrease the spread of HiB.
Currently, thanks to the vaccine, your child is unlikely to get HiB in the United States. There are now fewer than a hundred cases of invasive HiB per year in the United States. In addition, the vaccine has also decreased the asymptomatic carrier state. This makes it unlikely that your child will get the bacteria from another child who is carrying the bacteria but is not sick.