Diphtheria, an infectious disease communicable through coughing and sneezing, is caused by the bacterium Corynebacterium diphtheriae. The diphtheria vaccination program involves mass immunisation of the population which usually administered as a booster injection to children. The diphtheria vaccination program had been relatively successful with no catastrophic outbreaks worldwide. In 2000, 30000 cases of diphtheria were reported worldwide with 3000 fatalities. The oral polio vaccine, developed in 1957 by Albert Sabin through attenuation, and the injected polio vaccine, developed in 1952 by Jonas Salk, assisted in the global effort against polio.
(CDC;2012) Route of transmission- Measles is only spread by humans it is a highly contagious airborne viral disease spread through the respiratory route. Measles can be spread approx. four days before and after the rash appears. According to the CDC approx. 90% of non-immunized people who come in contact with it will get measles and the virus can stay alive for up to two hours on a surface.
If he has his way, rat poison will be tested on rats -- care to hazard a guess about the results? To be charitable, suppose for a moment that Mr. Gore came up with some chemicals whose properties were unknown. Animal testing would tell us little about their potential danger to humans. The basic tests in the original proposal, now being challenged by People for the Ethical Treatment of Animals (PETA) and other animal protection groups, are from the 1920s and 1930s. They are this crude and painful: Force the chemicals down the animals' throats, smear them onto their abraded backs or inject them directly into their stomachs until the animals die.
A European physician, Professor A Weichselbaum, discovered the cause of the mysterious cerebro-spinal meningitis illness in 1887 and Penicillin was the first antibiotic used to fight the disease. In 1978 the first vaccine was created and mass vaccinations during that year caused a substantial decline in the number of meningitis outbreaks (Fredericks, n.d.). There are three main types of meningococcal disease serogroups: B, C, and Y. Worldwide there are also A and W-135. USA vaccines cover A, C, W-135, and Y but not B (Coffee, 2015).
Some of the most deadly diseases and devastating epidemics in human history have been caused by bacteria. Cholera Diphtheria Dysentery Plague Pneumonia Tuberculosis Typhoid Typhus VIRUSES A virus is a small infectious agent that replicates only inside the living cells of other organisms. Viruses can infect all types of life forms, from animals and plants to bacteria and archaea. The average virus is about one one-hundredth the size of the average bacterium. Most viruses are too small to be seen directly with an optical microscope.
Raven Johnson Mr. Montgomery 3/14/12 Bubonic Plague The Bubonic Plague is a deadly infectious disease, which is caused by the bacterium Yesinia pestis. It is transmitted through the bite of a flea, and has killed millions of people. This plague is one of the most feared of all diseases (McNeill, W. H.). It is easily transmittable and has a high mortality. It can be cured through antibiotics (McNeill, W. H.).
Outcome 1 Understand the cause of infection 1.Identify the difference between bacteria, viruses, fungi and parasites. Bacteria Bacteria is a single celled organism, bacteria have evolved to thrive in almost any environment and can be found in almost any substance/surface and also in the human body, only 1% of bacteria is actually harmful. It's bad or infectious bacteria that cause illness as they rapidly reproduce and produce a toxin that kills or mutates cells, bacteria is also self sufficient. Viruses A virus is a small capsule that contains DNA or RNA, viruses, unlike bacteria are not self sufficient and need a host in order to reproduce I.E a human body. When a virus enters the body, it enters some certain cells and takes over making the now host cell make the parts the virus needs to reproduce, the cells are eventually destroyed through this process.
His first experiments were on rats where he found large differences in the strength and length of the NMR signals given off by the cancerous and healthy tissues. This work solidified his ideas of the MR Body Scanner. With much criticism from other scientists, in 1971 Damadian filed for a patent for his idea of NMR for detecting cancer. Herman Carr created one dimensional MR images. Then scientist Paul Lauterbur developed a way to make MR images in two dimensional and three dimensional using gradients.
Alzheimer-type neuropathology in transgenic mice over expressing V717F beta-amyloid precursor protein. Nature 373(6514), pp. 523–27. Hsiao K, Chapman P, Nilsen S, et al. (1996).
There are many contagious diseases that people can contract and it can instansly become a epanedmic. There are many contagious diseases worldwide according to the Center for Diseases Control, many of them being in the United States. I personally think that the worst one is polio. Polio is a very contagious diseaese. Polio is a crippling and potentially deadly infectious disease caused by a virus that spreads from person to person invading the brain and spinal cord and causing paralysis.