A woman cares for her child in Congo, which is battling a cholera epidemic. Photograph: Walter Astrada/AFP/Getty Images
Cameroon, Ghana, Nigeria, Congo and Chad account for most of the cases and fatalities, with deaths rates up to 5%
Western and central Africa are facing one of the biggest cholera
epidemics in their history, the World Health Organisation and the
United Nations Children's Fund said last month, in reporting that more
than 85,000 cases of cholera have been registered since the beginning of
the year, with nearly 2,500 deaths.
Unicef has identified three main cholera epidemic outbreaks in the Lake Chad
basin, the West Congo basin and Lake Tanganyika. The disease, which is
spreading along watercourses, has been made worse by the recent rainy
season. Five countries – Cameroon, Ghana, Nigeria, the Democratic Republic of the Congo (RDC) and Chad – account for 90% of the reported cases and fatalities.
Cholera is an acute intestinal infection caused by the Vibrio cholerae
bacillus. It is still one of the clearest indicators of social
development. The disease spreads through water, which has been in
contact with the faecal matter of infected people, reappearing
periodically in countries unable to secure access to clean drinking
water and adequate sanitation.
Almost all developing countries are
plagued by occasional cholera epidemics, facilitated by the short
incubation period, which ranges from two hours to five days. But it is a
long time since central and western Africa suffered such a serious
epidemic.
"The highest rates of contamination are in Chad,
Cameroon – where nine out of 10 districts are affected – and western
RDC, where the mortality rate is over 5%," Unicef spokeswoman Marixie
Mercado said, adding that the rate is over 22% in some regions. These
figures are particularly dramatic, given that with appropriate treatment
– antibiotics and intravenous rehydration – mortality can be brought
down to 1%.
One reason for the high mortality rate is the lack of
medical care. A lack of public awareness is also a factor. The current
peaks in the epidemic are in areas where the disease is not endemic,
according to the UN agencies.
"We have just received reports of a sudden outbreak of cholera in the Central African Republic,
where the disease has not been seen for years. That means people are
less aware of how to prevent an epidemic and how to react," Mercado
said. In Congo the disease reappeared in September in provinces where it
had not been reported in the past decade.
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