<span>People who are infected with
AIDS has more tendency to acquire multiple infections because the pathogen that
causes acquired immunodeficiency
syndrome (AIDS) damages the immune system of a patient by destroying the white
blood cells that fight infection. If the CD4</span>+ T cell count below 200 cells per µL and presence of
specific diseases in association with an HIV infection are observe in an
individual, then this could be an indication of having an AIDS.
Moreover, opportunistic
infections or cancer may take advantage of a very weak immune system, an
individual can develop an influenza-like illness with signs and symptoms that
includes swollen lymph nodes, fever, rash, weight loss, diarrhea and cough.
I would say non-athletes would have a higher respiration rate as the athletes bodies are conditioned for the exercise and use to it and are better able to keep it as compared to non athletes.
Small pox vaccines can only be tested on humans, however Bc the flu can replicate in pigs, scientists can tests vaccines on pigs. Since there are two means in which it can spread, scientists must be aware of the genetic difference between humans and pigs and act accordingly. Influenza vaccines might have greater success rates Bc of their ability to test the efficiency of their vaccines on pigs in comparison to small pox vaccines which can only be tested on humans.
Hope this helps!
drug tollerance
When a person needs a gradual increase in the amount of a psychoactive drug to produce the desired effect, drug tollerance has occurred.