Remaining alert for polio importations.
National Polio Certification Commission, Hunter Medical Research Institute, Newcastle, New South Wales, Australia; University of Newcastle, Newcastle, New South Wales, Australia.
David N
DN
Durrheim
D001315:Australia; D042241:Early Diagnosis; D006801:Humans; D009520:New Zealand; D010154:Pakistan; D011051:Poliomyelitis / Q000517:prevention & control*; D011159:Population Surveillance; D014195:Travel