Yemen Polio Update

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Yemen Polio Update
17 May 2005
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Table1 Distribution of wild polio cases and non
polio AFP cases (negative, pending culture and p
ending ITD) in Yemen by governorate, 2005. (As
of 17 May 2005)
EMRO 17-05-05
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Table 2 AFP cases by governorate and date of fir
st and last cases in Yemen, 2005 (As of 17 May
2005)
EMRO 17-05-05
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Table 3 Wild polio cases by governorate, distric
t and date of first and last cases
in Yemen, 2005
EMRO 17-05-05
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Table 4Count of wild polio cases by province
sorted by week of onset of paralysisin Yemen,
2005
EMRO 17-05-05
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Fig 1 Distribution of wild polio cases and non p
olio AFP cases (negative, pending culture and pe
nding ITD) in Yemen by week, 2005 (As of 17 May
2005)
EMRO 17-05-05
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Fig 2
Age distribution of AFP cases in Yemen , 2005
Age distribution of wild cases in Yemen , 2005
EMRO 17-05-05
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Fig 3
Immunization status of Laboratory confirmed polio
cases in Yemen, 2005

EMRO 17-05-05
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Epidemiologic situation (1)

• As of 17 May 2005 a total of 380 AFP cases were
  reported
  
• The distribution by governorate is shown in
  (Table 1)
  
• Out of the 107 AFP cases where the lab testing
  was finalized, 66 were wild poliovirus type 1
  positive and 41 negative
  
• These 66 positive cases are from
• Alhudaidah (51)
• Sanaa City (3)
• Hadramoat Almukalla (2) and Hadramoat Sayeun (6)
• Hajjah (1)
• Taiz (2)
• Rimah (1)

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Epidemiologic situation (2)

• In Hudaidah governorate Laboratory confirmed
  polio cases were reported from 13 districts.
  Almost all these cases were infected before the
  April NID campaign (Table 2)
• So far the spread in other governorates (Hajjah,
  Sana City, Taiz, Hadramoat Sayeun, Rimah) 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 quarter is 2-3 years old, those
  above 5 are only 6 (Figure 2)
  
• Investigation of cases showed many of them come
  from areas which were not covered during April
  NID round, and over all campaign coverage figures
  were below expectation. The number of OPV doses
  received by about 70 of the cases was less than
  4 cases (Figure 3)

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Important Recent Activities

• Government commitment at all levels is very high.
  They are deeply involved in the investigation of
  outbreak and in planning for the forthcoming
  campaign on 30 May 2005.
• In addition to WHO staff in Yemen, EMRO provided
  10 more experts who are supporting surveillance
  activities including Data management, planning
  for the NID and training of vaccinators and
  supervisors.
• Microplanning is on-going in all provinces and is
  expected to be completed this week.
  
• Training material already prepared and training
  is on-going to be completed before the campaign.
  
• Efforts are on the way to assess financial
  requirements for the campaigns and to secure the
  necessary amounts to cover the gap remaining
  after National inputs.