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How can the human prevent the spread on infection?
The first step in preventing the spread of viral infections is simply to
practice good hygiene. This means washing the hands often, and eating
only food that has been prepared properly. It also means building and
maintaining facilities for getting rid of sewage safely and for providing
clean drinking water.
Human bodies have a number of strategies to fight infections or prevent
them. The whole of our infection fighting apparatus is called the
"immune system." The human body's immune system doesn't just
include white blood cells, which attempt to catch and destroy germs,
but a variety of mechanisms that stop germs from creating infection.
Another important preventive measure is immunizing people against
viruses. This involves giving people vaccines that stimulate the immune
system to make antibodies, proteins that target a specific germ.
Vaccines to prevent Hepatitis B, polio, mumps, measles, rubella
(German measles), and chickenpox are usually given to babies and
young children in the United States. Vaccines also can prevent influenza
and Hepatitis A.
In most cases, humans have certain properties in their bodies that are
called innate immunities, allowing bodies to fight infections at virtually
all times. For example, the skin, our largest organ, is constantly fighting
infection, or warding off infection by acting as a barrier against foreign,
The immune system responds specifically to the particular type of invader. This
includes production of specific defence proteins called antibodies. It also involves
the participation of several different types of cells that are decedents of white
blood cells called lymphocytes. The immune system constitutes a third line of
defence, which comes into play simultaneously with the second.
Most viruses do not cause serious diseases and are killed by the body's
immune system its network of natural defences. In many cases, people
never even know they have been infected. But unlike bacteria, which can
be killed by antibiotics, most viruses are not affected by existing
medicines. Fortunately, scientists have been able to make vaccines,
which help the body develop natural defences to prevent many viral
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The most useful way in which humans can reduce the spread of
infection/diseases through advanced medical techniques is vaccines
because it learns white blood cells how to fight against batteries.…read more