50 Take special care with Rotarix Inform your doctor/health care professional if your child: • has a close contact such as a household member who has a weakened immune system, e.g., a person with cancer or who is taking medicines that may weaken the immune system. • has any disorder of the gastrointestinal system. • has not been gaining weight and growing as expected. • was born prematurely, because the level of protection afforded by the vaccine is unknown in this case.