This disease
epidemic in many parts of the world and about 110 countries of the world have
been affected by this disease. This
disease becomes a great concern of problems after the World War II. About 50
million to 100 million people are affected by this disease every year.
Fortunately the death rate from this disease is pretty low. Death occurs due to
the dengue hemorrhagic fever. This virus mainly acts on the platelets which
play an important role in the stopping the bleeding.
They tremendously decrease the platelet count in the
body resulting in the blood become thin. This thin blood become the cause of
the low blood pressure and blood become so much thin that it may start to leak
into the body. All this leads to the
dengue shock syndrome. Dengue virus
contains RNA nucleotide and it is of four types. If the person is infected with
type one it become a life long immune to this type. Immunity with other type also
attains but for very brief or a small period of time.
If the person is infected with another type of
dengue virus it may lead to life threatening complications. The biggest problem
about this virus is that still not a single vaccine is available in the market.
Research is going on to prepare an effective vaccine against this disease.
Medicine is there but not any effective one is there. The mood of transmission
of this virus is through arthropods which include ticks and mosquitoes. As it is transmitted through the arthropods
so it is called as an arthropod born virus. It is primarily transmitted by the
mosquitoes. In mosquitoes the Aedes family is the main carrier of the disease
and particularly the A. Egyptian is the main source of transmitting the
disease. Dengue virus is caused by the female mosquito and male mosquitoes do
not source or carrier of the dengue virus. Recently Pakistan is the most
affected countries from this virus. In 2009 this virus attacks the Srilanka
pretty badly and hundred of people died from this disease.
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