Antibiotic Resistance And Infection
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 …show more content…
The term is most commonly used for pathogens that distress the regular physiology of a multicellular plant or animal. However, pathogens can contaminate unicellar organisms from all of the biological kingdoms. Pathogens that come in the form of bacteria are microscopic organisms. They vary in all shapes and sizes and can only grow to approximately 10cm long. In suitable conditions, the bacteria can multiply very quickly. Once the pathogens are inside the body, they can let out toxins or poisons that cause the human body to feel ill. Diseases caused by bacteria include; whooping cough, typhoid, cholera and food