Member States shall ensure that:
official control measures are taken to prevent a herd in which brucellosis has been eliminated from being re-infected from other sources of infection,
all movements of cattle into and within herds covered by an eradication plan are subject to official monitoring,
the movement control measures referred to in the second indent can be applied without prejudice to existing Community measures concerning movement into and out of brucellosis-free and officially brucellosis-free herds.