Bacteria Bacteria are unicellular (single-celled) microscopic organisms found in a wide range of environments. Although being a single cell it still performs the seven life processes (movement, respiration, sensitivity, reproduction, growth, excretion, and nutrition). A single eukaryotic bacteria cell consists of a cell wall, cytoplasm, a nucleoid, plasma membrane, pilus, capsule, and sometimes a flagellum. Anthrax: Anthrax is an infectious bacterial disease caused by the bacteria Bacillus anthracis. There are four known forms of anthrax. Cutaneous (infection on the skin),...
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Travelling for business and pleasure is a small proportion of the total movement of people. Modern transport modes allow more goods and people to travel around the world at a faster pace; they also open up the airways to the transcontinental movement of vectors for infectious diseases. While travelling, people carry their genetic profile, immunological sequelae from previous illnesses, cultural preferences, traditions, and patterns of behaviour. They are also accompanied by microbes, animals and other biological lives. The range of...
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Yellow fever is a staggering malady spread by the mosquito’s bites (and primates!) is as yet pervasive in Africa, the Caribbean, and Central and South America. The yellow fever infection has most likely existed in some form for a large number of years and is believed to have begun in Africa from other similar infections. Anybody planning a trip to the previously mentioned areas should take all prescribed and essential vaccinations and in any event, get a yellow fever immunization....
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The vaccine became very common and it has reduced the rate of diseases by a lot. In order to understand how vaccines defend against bacteria and viruses in human body, you need to know how immune system works. White blood cells in our immune system gives us an constant alert against pathogens and each have different functions. When an immune cell meets its target, it replicates itself and produce antibodies which are protein weapons and attack the target. Once the...
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Introduction: Throughout history many outbreaks of diseases occurred to leave behind them millions of dead bodies, some even went so far to taint the health of most of the population. Fear and agony were spreading alongside it, stealing children and loved ones and forcing people to immigrate out of this thought-to-be-cursed land …. I will be discussing the major, and most devastating epidemics across history, their causes, what lead to the spread of the disease in the first place, and...
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