Yemen Polio Update

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Yemen Polio Update
31 May 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 31 May 2005)
EMRO 31-05-05
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Table 2 AFP cases by governorate and date of
first and last cases in Yemen, 2005 (As of 31
May 2005)
EMRO 31-05-05
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Table 3 Wild polio cases by governorate,
district and date of first and last cases in
Yemen, 2005
EMRO 31-05-05
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Table 4 Count of AFP cases by province sorted by
week of onset of paralysis in Yemen, 2005
EMRO 31-05-05
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Table 5 Count of wild polio cases by province
sorted by week of onset of paralysis in Yemen,
2005
10 Days After The Date of NID (10 14 April 2005)
EMRO 31-05-05
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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 31
May 2005)
EMRO 31-05-05
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Fig 2
Age distribution of AFP cases in Yemen , 2005
Age distribution of wild cases in Yemen , 2005
EMRO 31-05-05
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Fig 3
Immunization status of Laboratory confirmed polio
cases in Yemen, 2005
EMRO 31-05-05
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Wild virus cases in Yemen by province, 2005
EMRO 31-05-05
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Epidemiologic situation (1)

• As of 31 May 2005 a total of 461 AFP cases were
  reported
• The distribution by governorate is shown in
  (Tables 1 4)
• Out of the 250 AFP cases where the lab testing
  was finalized, 179 were wild poliovirus type 1
  positive and 71 negative
• These 179 positive cases are from (Table 5)
• Alhudaidah (133)
• Sanaa City (4)
• Hadramoat Almukalla (2) and Hadramoat Sayeun (12)
• Hajjah (7)
• Taiz (8)
• Amran (8)
• Rimah (2)
• AlDhale (1)
• AlBaidah (1)
• Abyan (1)
• Isolates from 15 cases are pending ITD Hudaidah
  (8), Hadramoat Sayeun (3), Hajjah (1), Dhamar
  (2), Albaida (1).

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Epidemiologic situation (2)

• In Hudaidah governorate Laboratory confirmed
  polio cases were reported from 20 districts.
  Most of these cases were infected before the
  April NID campaign (Table 2)
• So far the spread in the other 10 governorates is
  of lesser extent, possibly due to the effect of
  the NID (Table 4)
• There is evidence of a decrease in number of
  reported AFP cases after week 17 ending 24 April
  (10 days after the first day of the NID), (Figure
  1)
• More than half the polio cases are less than 2
  years and another 22 is 2-3 years old, those
  above 5 are only 7 (Figure 2)
• Investigation of cases showed many of them come
  from areas which were not covered during April
  NID round, which had coverage figures below
  expectation. The number of OPV doses received by
  about 70 of the cases was less than 4 doses
  (Figure 3)

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Important Recent Activities

• The 2nd round of National Immunization campaign
  started on 30th of May after excellent
  preparations.
• Technical support for campaign planning was
  provided by 5 experts recruited by WHO.
• Microplans were developed, training of
  vaccinators and supervisors completed.
• The Campaign was inaugurated by H. E. the Prime
  Minister of Yemen with wide presence of higher
  officials (MOPHP), Mayor of Sanaa City, Head of
  Red Crescent, WHO Representative Staff.
• Launching was done in most governorates by
  different governers.
• Preliminary feedback from the field is good.