Appropriate medical care should be readily available in case of rare anaphylactic reaction after vaccination. Not indicated for primary immunization. Postpone vaccination in patients suffering from acute severe febrile illness; until end of treatment or resolution of disease in case of immunosuppressive treatment or immunodeficiency. Patients who experienced high fever (≥40°C) w/o any identifiable causes, convulsions & collapse or shock-like state w/in 48 hr after immunization w/ any pertussis vaccines; w/ bleeding disorders, thrombocytopenia or on anticoagulant therapy. Review medical history & a clinical exam prior to vaccination.