What is Malaria?
Malaria is a febrile debilitating illness,
which can lead to chronic anaemia, brain and
kidney damage and death, especially amongst
children and pregnant women. It is caused by the
Plasmodium parasite that is injected into the
blood system by an infected female Anopheles
mosquito.
What is the problem?
Malaria is difficult to eradicate as the
mosquitoes breed in swampy marshy areas of the
tropics, and the parasite is becoming resistant
to the cheaper drugs. Without control Malaria
can have a dramatic impact on economic
development. Income to countries have been
devastated by malaria because so many people are
off work ill with it. It is reckoned that
billions could be saved by eliminating malaria.
How is Malaria caused?
By the Plasmodium parasite that is injected
into the blood stream by an infected anopheles
mosquito
Has Malaria just appeared?
It was first described in writings as long
ago as 2,700 BC
What are the answers?
- Clear the swampy areas
- Stop the mosquitoes biting
- Kill the parasite
- Education
Malaria is also in Europe and areas of
England are affected by it particularly some of
the Scottish isles.
- Malaria
parasites have a complex life cycle. In
order to live, they need to have both a
human and a mosquito host.
- The
mosquito host can't be just "any"
mosquito. It has to be a mosquito of the
genus Anopheles.
- The
mosquito picks up the malaria parasites from
the blood of an infected human when it
feeds.
- The
malaria parasite reproduces itself in the
gut of the Anopheles mosquito. The
malaria parasites need the mosquito to
continue their life cycle. Then, the
mosquito passes the malaria parasites to the
human through its salivary glands.
- The
four different species of malaria parasites
cause types of malaria that are somewhat
different from each other.
- The
worst type is caused by Plasmodium
falciparum. Infection with Plasmodium
falciparum kills approximately 1-2% of
those who come down with it. Falciparum
malaria is a serious illness characterized
by fever, headache, and weakness.
- Complications
of falciparum malaria include
cerebral malaria, in which the brain is
infected, severe malaria, in which the
parasitic infection essentially "runs
out of control," and placental malaria,
in which falciparum is a grave
complication of pregnancy, and coma. Each of
these complications is very serious and
often fatal.
- Falciparum
malaria is the major type found in
subSaharan Africa, where 90% of the world's
malaria cases occur.
- Unfortunately,
falciparum malaria is also frequently
resistant to drugs and is becoming more
common in high elevation areas of Africa,
and in portions of Asia.
- The
other species of malaria cause a
debilitating illness characterized by spells
of chills, fever and weakness. This illness
generally lasts 10-14 days, and is
self-limiting in nature. The malaria caused
by these species is rarely fatal.
- Malaria
caused by Plasmodium vivax and Plasmodium
malariae can relapse [come back] if it
is not properly treated with medicine.
- Unfortunately,
in places where Plasmodium vivax has
become more common, such as India, the more
dangerous Plasmodium falciparum
hasn't been far behind.
- Africa
is terribly affected, and accounts for over
90% of reported cases of malaria. About 10%
of hospital admissions are for malaria, as
are 20-30% of doctors' visits. As bad as
that is, some experts foresee as much as a
20% annual increase in Africa's rate of
malaria-related illness and death. No
Western disease is nearly so prevalent or
growing at anything like that rate.
|