According to the text, mankind is trying with all its might to fight the tropical disease malaria, but there are not many effective ways to do so.
The first solution proposed in the text is to use modern medicine to treat the infected patients. While this sounds plausible, the lecturer stresses that it is only a temporary solution, not a cure for the disease. He also claims that mosquitoes have adapted over time and therefore some of the previous treatments are no longer effective and are now completely useless as the disease has become resistant to them.
The second option that could help against this unpleasant disease is a strategy to kill the mosquitoes to prevent further spread of the contagious disease. However, the lecturer is convinced that this is almost impossible due to the countless mosquitoes: it is highly unlikely that they can all be reached with chemicals so that they cease to exist and die out completely.
The final strategy discussed in the text is to sterilize the insects. The lecturer agrees that this solution is the most effective of all the above, as it is harmless to humans and actually works on male mosquitoes. Nevertheless, scientists have found that this approach cannot solve the problem; somehow, after becoming sterile, male mosquitoes are no longer attractive to females, and therefore, producing unsterilized eggs is not enough for these insects to die out.
Taking into account all the ways to prevent the spread of malaria, our modern science has still not been able to find an effective way to cure people or force the mosquitoes to die out.
According to the text, mankind is trying with all its might to fight the tropical disease malaria, but there are not many effective ways to do so.
The first solution proposed in the text is to use modern medicine to treat the infected patients. While this sounds plausible, the lecturer stresses that it is only a temporary solution, not a cure for the disease. He also claims that mosquitoes have adapted over time and therefore some of the previous treatments are no longer effective and are now completely useless as the disease has become resistant to them.
The second option that could help against this unpleasant disease is a strategy to kill the mosquitoes to prevent further spread of the contagious disease. However, the lecturer is convinced that this is almost impossible due to the countless mosquitoes: it is highly unlikely that they can all be reached with chemicals so that they cease to exist and die out completely.
The final strategy discussed in the text is to sterilize the insects. The lecturer agrees that this solution is the most effective of all the above, as it is harmless to humans and actually works on male mosquitoes. Nevertheless, scientists have found that this approach cannot solve the problem; somehow, after becoming sterile, male mosquitoes are no longer attractive to females, and therefore, producing unsterilized eggs is not enough for these insects to die out.
Taking into account all the ways to prevent the spread of malaria, our modern science has still not been able to find an effective way to cure people or force the mosquitoes to die out.