Pakistan largest reservoir of polio virus: WHO chief
The director-general of the World Health Organization (WHO), Dr Gro Harlem Brundtland, said on Thursday that Pakistan was the largest remaining reservoir of wild polio virus in the South Asian
The director-general of the World Health Organization (WHO), Dr Gro Harlem Brundtland, said on Thursday that Pakistan was the largest remaining reservoir of wild polio virus in the South Asian