A West Australian child is recovering in hospital after being diagnosed with meningococcal serogroup W disease.

In a statement released Thursday, the Department of Health said the child had attended Child Australia in Lockridge every day between December 16 and 20 and called on the centre's children and staff to remain alert for symptoms.

Children and staff who attended the early learning centre between December 16 and 20 and who spent two full days or more in the kindy room, or were in contact with children in the kindy room for more than 20 hours, have been asked to visit the centre between 2pm and 4pm on Thursday to receive clearance antibiotics.

The child is recovering from the disease. Credit:Alamy

People who spent less than 20 hours in contact with children in the kindy room should remain alert for symptoms but do not need clearance antibiotics.