Pathogens are biological agents; generalized as single cellular microorganism that can vary from virus, fungi or bacteria they are commonly the first link to the chain of infection. Through several substrates and pathways these biological agents invade the host and procreate disrupting the normal physiology of the multi cellular organism, resulting in illness or disease. They are so adaptable they can affect unicellular organisms from biological kingdoms. There are thousands of different pathogens that have unique types of infection or parasitism. However they also have common traits, all successful pathogens access the host through several ways, in doing so invades the host defences allowing for replications and creating a permissive niche. One pathogen we are looking at in particular is a blood borne pathogen that is commonly known as Hepatitis B virus (HPV). …show more content…
They are separated into categorise primarily because the diseases are caused by three different virus and the modes of transmission have a different effect on the liver. Hepatitis B is spread through the contact of infected blood or any body fluids that includes vaginal fluid or semen; therefore it can be …show more content…
Further ways the virus can cause infection is by the piercing of skin with unsterilized equipment as well as sharing razors or toothbrushes with someone who is infected. If Inflected blood comes in contact with a fresh cut or open sore it can penetrate the bloodstream therefore the pathogens replicates and proliferate within the blood stream, infecting the healthy host. This is the primary reason to why an infected mother can pass down the virus to her newborn
This field is analogous to epidemiology. It is geared more toward viruses specifically whereas epidemiology focus on diseases in general. It “is the study of viruses and virus-like agents, including (but not limited to) their taxonomy, disease-producing properties, cultivation and genetics” (Meštrović,2015). Medical professionals like Max Theiler go through a process to determine what kind of virus is being analyzed. They classify components of the virus so it was indistinguishable contagion.
Due October 19th, 2015 Erin Gibbs: 200270053 Dr. Andrew Cameron Bio 222 Written Assignment 1 1. Health officials realized that the mysterious illness was not caused by a bacterium because the pathogen would be identified quickly in comparison to a virus, which is more complicated (CBC, 2013). 2. It was hard to identify the infectious agent because SARS presented as flu-like symptoms with a rapid onset and is similar to the common flu (CBC, 2013). People who had other underlying health problems made it difficult to identify symptoms of SARS because it made it hard to differentiate (CDC, 2013).
1. In the video, it was stated that racial classifications are arbitrary. Please explain how racial classifications are arbitrary. Racial classifications are arbitrary. Many “scientists” in societies have tried to prove that some races were more evolutionarily developed than other races with the use of eugenics, but race is a social construct to categorize people with similar features into the same sub-groups. Humans are all one species, and race is nothing more than expressed phenotypes.
There are many people in the world who claim that they have tried to take down the big evil people in the world. Whether it is the big company that uses questionable practices, big dictators with a terrible idealism, or just the towering bully down the street, people have been trying to defeat the huge people that make life worse for everyone. But, there are tinier things that have been a disability on the human race, that have killed many people throughout time and location; germs. Whether being a bacterium, virus, or protozoa, there have been fewer people that have volunteered to take down these microscopic warriors. This is because these diseases are scarier, not because of size, but of power, taking down people across race and socioeconomic
The virulence of the plague bacillus—that is, its ability to multiply in the tissues of its host and cause death—is remarkably stable and vigorous. Once ingested by a flea, it multiplies until the insect’s digestive tract is blocked. When the flea bites another rodent or a human, bacilli are regurgitated into the new host and migrate through the lymphatic system to lymph nodes. There they are able produce proteins that disrupt the normal inflammatory response and that prevent their digestion by infection-fighting macrophages. With the host’s immune response thus weakened, the bacilli quickly colonize the lymph nodes, producing a painful swelling and, eventually, destroying the tissue.
Bacteria multiple itself by division. Viruses and bacteria both are microscopic, contain proteins, and cause disease. 2. (a) A vector is known as an infected insect that carries the disease from one animal to another and from one plant to another. The difference between a vector and a host is a vector is the
By stealing the energy from the host cell, the virus ultimately takes over the entire cell and makes it infected. The virus then feeds off of the cell until it uses up everything inside of the cell. Viruses can only thrive and replicate inside the environment of a living cell of another organism. They develop and disperse by attaching its protein to a receptor site on the host cell then injecting its genetic material into the host cell. If the virus was to exit the host cell it would die.
A susceptible host (Chain of infection). Example: 1. Viruses (flue) - 2.
These new viruses continued the lytic cycle. Another cycle is called the Lysogenic cycle. The viruses entered the host cell, but they are slow in multiplying and it includes the HIV virus and herpes. While the viruses’ nucleic acid is present in the chromosome, it is not active so it doesn’t immediately affect the cell’s function. But then, it separates from the genetic material of the host cell and take over to multiply.
When we think about viral infections, images of minuscule vesicles carrying DNA jump into the forefronts of our minds. Yet we forget to associate it with our families, our loved ones, or even ourselves. We believe in the invincibility of our bodies and the impossibility of infection. It is this mindset that has allowed Hepatitis B and other viruses to secure their survival and prevalence in the world. Hepatitis B is an inflammation of the liver caused by HBV, which is a double stranded DNA virus.
Infections are most commonly caused by an infected needle. Among these infections one of the most serious is Hepatitis. Hepatitis is a blood borne disease, the two most common strains are Hepatitis B and C. Hepatitis B and C are both liver infections. It is contracted from one person to another via bodily fluids. Hepatitis B has a
HIV is transmitted through exchanges of bodily fluids via blood, semen, vaginal secretions and breast milk. Behaviors that promote risk to transmit HIV are unprotected anal and vaginal sex, sharing needles- injection drug use, piercing/ tattooing, insulin, hormone and vitamin shot, acupuncture and breastfeeding. Airborne, dermal, saliva exchange and other casual contacts with an HIV-positive person have been proven as
Bacteria that causes disease are called pathogens. The disease is caused by a poison called exotoxin and endotoxin produced by the bacteria. Another microbial life are protist. They are unicellular eukaryotes. Types of protist includes protozoans and slime molds.
5 Ways to Burn Calories as a Hepatitis Patient All the food you eat passes through your liver. The liver has the job of changing the food you digest into chemicals and stored energy, which are essential to your entire system. It also allows the nutrients to be incorporated into your body system so that your cells can build energy and your regular body functions may continue. What is hepatitis?
PREVENTION AND CONTROL OF HEPATITIS B IN THE UNITED STATES Antony Van Leeuwenhoek’s development of the microscope in the 1600’s allowed scientists to visualize microorganisms that cause infectious diseases for the first time. (Paul g. Engelkirk –Janet Engelkirk 2011, Burton’s microbiology for health sciences. Ninth Edition p.7). Since then different bacteria and viruses have been discovered by use of a microscope such as Hepatitis viruses. There are five main recognized Hepatitis viruses that is , Hepatitis A (HAC), Hepatitis B(HBV) , Hepatitis c, Hepatitis D, Hepatitis E, Hepatitis