Not to be administered intravascularly or give fractional doses (<0.5 mL). Administration to patients who are suffering from acute severe febrile illness should be postponed. Patients who had any of the following adverse events w/in 48 hr after a previous immunization w/ any whooping cough vaccines: high temp (≥40ºC) w/o any identifiable cause, convulsions & collapse or shock-like state, patients w/ any bleeding disorders, thrombocytopenia or anticoagulant therapy.