Antibiotic Resistance And Overuse Of Vaccines Essay

908 Words Mar 16th, 2016 4 Pages
Antibiotic resistance and overuse of vaccines has contributed to the increased incidence of emerging diseases and resistance and their controls and treatments.

Infectious diseases are caused by pathogens or organisms such as viruses, bacteria, fungi and parasites. The human immune system is the last line of defense against viruses and bacteria that enter the body. To fight off infectious diseases and protect the body, the immune system attacks organisms and substances that invade body systems. The immune system is an organization of tissues, cells, and organs. This network provides a sufficient shield against diseases for the human body. In most cases the immune system prevents infections to a high standard, however the system can sometimes have complications which can lead to further illness and infection. Infection occurs when bacteria or viruses enter the body and start to multiply. Fortunately, disease only happens in a small proportion of infected people. It develops when the cells in your body are damaged as a result of infection or when symptoms and signs of sickness emerge. Most of the symptoms that cause a person to suffer throughout an infection such as rash, headache, malaise and fever are the result of the immune system trying to eradicate the infection from the body.

‘Infections with a pathogen does not necessarily lead to disease.’(quotesomeonehere) Pathogens are a biological agent that cause…

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