Page 14 - WHO

Adequate stool samples:

Adequate specimens are defined as "two stool specimens collected from a case, at least 24-
48 hours apart within 14 days of the onset of the paralysis and each specimen must be of
adequate volume (8 – 10 grams) and arrived in the Na�onal Polio Laboratory in "good" condi-
�on". Good condi�on; is defined as no leakage, adequate documenta�on and evidence that
the reverse cold chain was maintained. The global standard of adequacy rate is 80%. In
Sudan, 98% of the 579 cases had adequate stool specimens. 100% of stool samples arrived

to the laboratory in good condi�on.

Stool samples adequacy rate was 100% in 9 states, between 89% - 99% in all other 9 states.

The non-polio entero-viruses:

(NPEV) detec�on rate among all stool samples was 11%. All states reported NPEV.

Active surveillance visits:

During 2018 the completeness of ac�ve AFP surveillance visits for the high priority sites was
100% completeness and 100% �meliness, for medium priority sites completeness was 99 %
and �meliness 78% and for low priority sites completeness was 98.3 % and �meliness was
73%.

Diagnosis for AFP cases:

A list of 29 diseases and condi�ons were classified as causes of AFP cases as follows:

GBS was one of the main causes of AFP cases (37.1%), under 15 popula�on rate being 1.199),
Trauma�c neuri�s 3.8 %, and, transverse myeli�s 3.5 % and the other diagnoses are 55.6.7%

seen in.

Enhancing community based surveillance system:

Sudan VPDs Surveillance is basically facility bases surveillance with recent ini�a�ve of adding
community based surveillance to cover the needs of special popula�on in a number of states.
As the world is too close to achieve goals of endgame strategy for Polio Eradica�on Program,
there is need to integrate the surveillance ac�vi�es both at structural and opera�onal levels.