A typical immune system response to an infection a. requires positive feedback loops. All of these 23. It is caused by a virus. It damages WBCs. It's expanding from the tropics into new areas.
Malaria is less virulent than it once was.
Treat everyone with antibiotics. Move people out of infected areas. Scientists who study infectious diseases are strongly recommending that the U.S. a. speed the development of new antibiotics. Which feature of the skin on our face, neck, etc. Perforin is produced by killer T cells.