Malaria, bilharzia, sleeping sickness ... Parasitic disease for as long as human with income in fierce battles the Sometimes Aiqarha and times Tgahrh .. Malaria kills one million to two million people a year, registered the highest cause of mortality in the world, and pays the traveler in England dearly to buy medicine Almllarron Malorone To keep his life from malaria that struck two thousand English after their return from Africa also reported CNN Last month. While the incidence of schistosomiasis in Egypt, for example, 20% of the population, and lead to economic losses estimated at $ 500 million.
There are approximately 10,000 infected with sleeping sickness in Sudan alone, according to reports May 2001 The parasite Alkhndeghi Cryptosporidium , Has attacked the entire city in Canada with the beginning of last month claiming dozens of lives and hundreds injured;, where they drank from contaminated water.
So why were these parasites, despite the small size of this force? And how the defenses of the immune system unable to face? What are the means of defense which he has put God to defend the other for the right to life??
Before wander with the parasite within the human and answer these questions, we know the beginning of that organism lives at the expense of another organism called "host" Host Derived food and abode it usually causes him some damage or injury. And dependent host resistance to such a parasite on several ways, the most important of the secretion of the immune system antibodies Antibodies And dependence on the white blood cells WBC's An important line of defense and essential in this battle.
When the parasite enters the external composition which carries antigen or Antigen Raises secretion of these antibodies, the immune system and raises to move against him ... However, there are multiple ways followed by the parasite in its battle inside the body, according to the kind and strength .. The parasite can one follow several defensive means at the same time.
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parasites