Yemen Polio Update

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Yemen Polio Update

• 24 August 2005

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Table1 Distribution of wild polio cases and non
polio AFP cases (negative, pending culture and
pending ITD) in Yemen by governorate, 2005. (As
of 24-08- 2005)
EMRO 24-08-05
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Table 2 AFP cases by governorate and date of
onset of first and last cases in Yemen, 2005 (As
of 24 of August 2005)
EMRO 24-08-05
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Table 3 Wild polio cases by governorate,
district and date of onset of first and last
cases in Yemen, 2005 (As of 24 of August 2005)
EMRO 24-08-05
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Table 4 Count of AFP cases by province sorted by
week of onset of paralysis in Yemen, 2005 (As of
24 of August 2005)
EMRO 24-08-05
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Table 5 Count of wild polio cases by province
sorted by week of onset of paralysis in Yemen,
2005 (As of 24 of August 2005)
10 Days After 10 14 April NIDs
10 Days After 30 May 1 June NIDs (MOPV1)
10 Days After 12-14 July NIDs (MOPV1)
EMRO 24-08--05
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Fig 1 Distribution of wild polio cases and non
polio AFP cases (negative, pending culture and
pending ITD) in Yemen by week, 2005, (As of 24
of August 2005)
11-14 April round
12-14 July round
30 May-1 June round
EMRO 24-08-05
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Wild polio cases in Yemen in relation to SIAs (As
of 24 of August 2005)
From 30 of April to 8th of June 05
Before end of April 05
Round 1 April 2005
185 cases
167 cases
Round 2 30 May- 1 June 2005
Round 3 12 Jul-14 Jul 2005
From 9th of June to 22 July 05
From 23rd of July to date
85 cases
No cases
EMRO 24-08-05
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Epidemiologic situation

• As of 24 August 2005 a total of 800 AFP cases
  were reported (Table 1).
• The date of onset of 1st and last AFP cases is
  shown by province (Table 2).
• The number of laboratory confirmed cases are 437
  distributed all over 21 of the 22 provinces
  (Table 3).
• The number of reported AFP and confirmed cases
  continue to decrease although it is now in the
  high transmission season in Yemen.
• After a peak of almost 50 cases per week for 4
  weeks from mid April to mid May. The average
  number of cases decreased to half (22 cases per
  week) until end June. Then, it further decreased
  in July to an average less than 10 cases per
  week.
• Twelve provinces have no cases since the
  beginning of July 2005.
• Half of the 69 cases positive which have appeared
  after 10 days from the beginning of the first
  mOPV round (30 May-1 June) were from 3 provinces
  Hajjah (13), Saadah (10) and Dhamar (10). The
  performance in some of the districts of these
  provinces in May round was deficient in certain
  aspects and there were parental refusals. These
  deficiencies were mostly overcome during the July
  round.

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Recent/Planned Activities

• The August NID will be completed today 24 August
  2005.
• WHO provided technical support by 8
  internationals.
• The campaign will be monitored by international
  observers and national independent monitors.
• The 3 provinces presently contributing most of
  the cases were vaccinated with MOPV1 left over
  from May and July rounds.