Haemophilus aegyptius, the Koch-week bacillus. This type of bacterium is gram-negative and rod shaped. Haemophilus means “blood loving”and therefore grow in chocolate agar which contains disrupted blood cells. Other bacterium which may cause Bacterial Conjunctivitis include Streptococcus and Staphlyococcus. The incidence of Bacterial Conjunctivitis caused by gram positive bacterium are more predominate. The different types of bacterium which cause Conjunctivitis are highly contagious and transmitted
The germ warfare agent anthrax is a bacterium that, if inhaled, can kill a person in a matter of days. It sounds like science fiction, like something a mad scientist developed in a lab in hopes of taking over the world. In reality is an ancient disease of live stock and humans known since Biblical times. It just never made so many headlines before. Anthrax is an infectious disease known as Bacillus Anthracis. The bacterium can survive for centuries in a spore form. Their inside coating of armor allows
column from Egyptian mummies from 2400 BCE show definite pathological signs of tubercular decay. Called "consumption," tuberculosis was recognized as the leading cause of mortality by 1650. Using a new staining technique, Robert Koch identified the bacterium responsible for causing consumption in 1882. While scientists finally had a target for fighting the disease, they did not have the means to treat patients; the spread of infection was controlled only by attempting to isolate patients. At the turn
bacteria can reproduce asexually by simple division of cells and some bacteria reproduce sexually by conjunction. A bacterium is a waste producer of products and secretions. This allows pathogens to invade their hosts to cause disease some of these harmful diseases are Scarlet fever, an acute illness, characterized by a reddish skin rash, which is caused by systematic infection with the bacterium streptococcus. St. Anthony’s Fire is another bacterial disease. “St. Anthony’s Fire which is an acute superficial
vertex. The influenza virus is made of a flexible, helecal capsid. It has an outer membranous enevelope that is covered with glycoprotein spikes. The T-even bacteriophage consists of a polyhedral head and a tail. The tail is used to inject DNA into a bacterium while the head stores the DNA. Basic life is defined as the simplest form capable of displaying the most essential attributes of a living thing. This makes the only real criterion for life the ability to replicate. Only systems containing nucleic
backyard .It does not mean that only dirty yards have this disease but it is found in every Americans backyard. The disease is called Lyme disease. Now I will be elaborating on the disease. Every disease has a causative agent. This agent is a harmful bacterium that causes the disease. The causative agent for this disease is the bacteria Borrelia burgdoferi. A disease is transmitted in one way or the other. Lyme disease is transmitted through a vector. The vector of the disease is an infected deer tick
adolescents regardless of demographics or location. Pelvic inflammatory disease (PID), a serious complication of chlamydial infection, has emerged as a major cause of infertility among women of childbearing age. Chlamydial infection is caused by a bacterium, Chlamydial trachomatis, and can be transmitted during vaginal, oral, or anal sexual contact with an infected partner. A pregnant woman may pass the infection to her newborn during delivery, with subsequent neonatal eye infection or pneumonia. The
appears that it is quite a threat here in Southern California. Surgeon-General Rupert Blue of the Public Health Service who recently commented, "that the epidemic of 1893 which swept a large part of Europe and this country was caused by a very minute bacterium commonly called Pfeiffer bacillus" supported the origins of this questionably new influenza. Despite the fact that Spanish doctors are vehement in their denial that the disease, which we are aware has already taken its toll in our country and throughout
alpha hemolysis. They are non motile organisms. Virulence Virulence is caused by the chemical composition of the capsule. There are over 90 serotypes of S. pneumoniae which causes great difficulty when trying to develop a vaccine for this bacterium. The capsule interferes with phagocytosis by preventing C3b opsonization of the bacterial cells. Diseases S. pneumoniae is the leading cause of pneumonia in all ages. Pneumonia due to this organism is characterized by four stages. In the first
produces a product far more sophisticated than that of any computer. This enormous set of instructions fits within a single cell and routinely directs the formation of entire adult humans, starting with just a single fertilized egg. Even the DNA of a bacterium is highly complex, containing at least 3 million units that all are aligned in a very precise, meaningful sequence. DNA is described as a miniaturized marvel and with information so compactly stored that the amount of DNA necessary to code all the
of living creature changes into something different; evolution that is not directed by any purposeful intelligence. Another part of the idea is that more complex forms have arisen from simpler forms. Tracing back to the simplest living thing, a bacterium, scientists may find the origin of mankind by finding something even simpler, something out of which bacteria themselves came. Recent work has revealed the existence of a group of bacteria that are as different from other bacteria as the latter are
The Ethics of Botox What is Botox? Botox is short for Botulinum Type A Toxin, a protein complex produced by a bacterium called Clostridium botulinum. Botox injection is one of the newest and among the most popular cosmetic procedures for wrinkles. Botox works magically to smooth out facial lines by preventing the muscles that cause frown lines from contracting. Only a tiny amount of this toxin is used in Botox injection for beautification purposes. According to the American Society for
Staphylococcus aureus Life History and Characteristics: Staphylococcus aureus is a gram positive bacterium that is usually found in the nasal passages and on the skin of 15 to 40% of healthy humans, but can also survive in a wide variety of locations in the body. This bacterium is spread from person to person or to fomite by direct contact. Colonies of S. aureus appear in pairs, chains, or clusters. S. aureus is not an organism that is contained to one region of the world and is a universal health
listeriosis in humans. Listeriosis includes manifestations of septicemia, meningitis, pneumonia, and encephalitis. L. monocytogenes is also implicated in miscarriages, stillbirth, and premature birth for pregnant women. L. monocytogenes is a tough bacterium resistant to freezing, drying, and heat; most strains have been shown to be pathogenic. It is hypothesized that 1-10% of humans are intestinal carriers of L. monocytogenes. Over 37 mammalian species, including wild and domestic animals, are capable
growth each slant was tested using the gram staining technique to confirm the complete isolation of the bacteria. Both isolations were completely successful. Then each sample of bacteria was subjected to a series of tests for identification. One bacterium was gram negative. It underwent four different tests. These tests were the EMB test (Eosin Mehylene Blue), the Sulfur Indole Motility (SIM) test, the Urease test, and the Simmon’s Citrate Utilization test. The EMB test checks for a bacteria’s ability
parasite gram negative coccoid bacteria nonmotile intracellular does not possess a peptidoglycan layer unable to produce its own ATP. ľ The following tests are used to identify C. trachomatis: 1) ELISA test and FA test may be effective only when the bacterium is metabolically active (not infectious), these tests are used to detect group specific LPS and strain-specific outer membrane proteins 2) gram staining (negative, coccoid) 3) culture and iodine staining for inclusion bodies (used because the trachoma
some germs were already naturally resistant to the drug. As we used more and more of the antibiotics, we incidentally caused drug-resistant germs to progress. So, even if you’ve never misused antibiotics, you could still become infected by bacterium most drugs won’t kill. For each drug, there are germs genetically programmed to survive- some w/ outer walls tough for antibiotic to cross, others with ways to dump the drugs back out before they can work, and yet others can inactivate the
cough, with x-rays showing pneumonia. This more severe form usually prevails in elderly, cigarette smokers, people with chronic lung disease, or those who are immunocompromised, such as cancer or AIDS patients. Virulence: Being a gram-negative bacterium, L. pneumophila has lipopolysaccharides (LPS) that act as endotoxin within a human host. The presence of a flagella is thought to mediate adherence to human lung cells, thereby causing infection, since flagella-less strains do not cause disease.
illness and can damage a person's organs. Every year more than 25,000 people in the U.S. are diagnosed with TB disease. That's only a fraction of the amount of people who carry the Mycobacterium tuberculosis. Mycobacterium tuberculosis is a rod-shaped bacterium. TB is spread through the air by carriers of the germ. People who breathe the same air can become infected with the TB germ. People who do work around or with people with the TB disease should take medicine. TB infection means that the person has
(Skillicorn). It is believed to have been spread from Europe to the Americas and South Pacific islands by European colonists. The disease became universally known as Hansen’s disease in 1873 after a Norwegian scientist, Dr. Armauer Hansen, discovered the bacterium that causes the disease, which eventually served to end the myth that the disease was a curse of God (Skillicorn). The disease is caused by a slowly multiplying bacillus, called Mycobacterium leprae, which primarily affects the nerves, skin, and