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Essay On Infection Diseases

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Infection diseases happens when an unknown organism move into a person’s body and causes trauma such as bacteria, viruses, fungi and parasites. There are a lot of organisms in \human body which normally harmless and helpful, but some may cause disease if the condition were alter. These organism stay in human's’ body to help itself survive by reproduce and clonation. The infectious diseases can be easily passed from one to another. For instance, though the channel by bites from insects or animals. Beside, others are obtained by consumed contaminated food or drinks which being exposed to the environment with the organisms. In addition, the signs and symptoms of the diseases are extend depending on the organism which causing the infection. For …show more content…

To the function of phagocytes and other elements of the innate immune system have to complement with the specific immunity. Besides, compared to the innate immunity which specific immunity allow certain targeted response towards a specific pathogen. Also only vertebrates will have these specific immune responses. Furthermore, lymphocytes are key to the specific immune response which under the white blood cells. Lymphocytes are construct in the bone marrow, and mature into one of several subtypes. The two most common are as the T cells and B cells (The History of Vaccines, …show more content…

Based on my opinion, there will always be pros and cons in everythings. Vaccines protect future generations. Mothers who has been vaccinated could have protect their unborn children from viruses that could eventually cause birth defects. Besides that, vaccinated communities can help decimate diseases for future generations. Before the rubella vaccine was licensed in 1969, a global rubella which is the German measles begin to caused the deaths of 11,000 babies, and birth defects in 20,000 babies between 1963 and 1965 in the United States (CDC,

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