> Certification is granted when a country proves that the transmission chain is interrupted for at least the previous three consecutive years.
And
> To get the WHO certification, a country must demonstrate the capacity to prevent the re-establishment of transmission.
> Certification is granted when a country proves that the transmission chain is interrupted for at least the previous three consecutive years.
And
> To get the WHO certification, a country must demonstrate the capacity to prevent the re-establishment of transmission.