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May 2005 |
| Over 40,000 children
in the Bousso district, 300 km south of N’Djamena, were recently vaccinated
against measles by Médecins Sans Frontières (MSF). With over 4,000
measles cases reported in the city in early April, the emergency now calls for
both preventive and curative medical action. N’Djamena has an estimated
population of one million and is facing the risk of a very long and very lethal
epidemic. MSF has deployed a team of 30 specialists to help fight the outbreak. |
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MSF’s massive vaccination campaign started on 11 May and aims to immunise
about 280,000 children through 29 mobile vaccination sites opened in collaboration
with the Ministry of Health in Chad.
The transport and storage of the 300,000 vaccine doses needed for the campaign
has huge logistical challenges. Vaccines are sensitive products which lose their
potency when exposed to heat, a real problem in N’Djamena where temperatures
easily reach 40 degrees. The success of the immunisation campaign depends largely
on the quality of the “cold chain”, the combination of measures to
keep the vaccines between +2° and +8°C at all times. “You don’t
freeze a thousand ice packs in a few minutes,” explains Valentin Omari Sefu,
logistical coordinator for Médecins Sans Frontières in N’Djamena.
“It usually takes a week to organise such a massive campaign, but we managed
to do it in three days by bringing back frozen packs and two freezers from Bousso.
It’s a terrible ten hours journey and we almost got stuck twice.”
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As well as maintaining the cold chain, medical staff must also
follow strict guidelines in the mobile vaccination sites, installed in temporary
shelters, in order to reach the target of 1,000 immunisations per team per day.
Timing is crucial to cut the spread of the epidemic.
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Measles is also an aggravating factor for malnutrition. Therefore, MSF is also
undertaking nutritional screening. The first results indicate high numbers of
cases of severe malnutrition and three therapeutic feeding centres have been opened
under the supervision of a nutritional medical nurse.
As the number of infections keeps growing, MSF is also providing medical support
and drugs to 17 health centres for the less severe cases. The most severely infected
patients are referred to the Union and Sultan Kasser Hospital, where MSF specialists
assist the resident staff in treating the concomitant infections, such as pneumonia.
While MSF is endeavouring to take control of the epidemic in the capital, new
measles cases have been reported from two southern districts, Salamat and Moyen
Chari, more then 600 km away from N’Djamena. Assessment teams are on their
way to evaluate the situation.
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