FELINE PANLEUKOPENIA VIRUS
Virus Classification:
Order: Mononegavirales
Family: Parvoviridae
Subfamily: Parvovirinae
Genus: Parvovirus
Species: Feline panleukopenia virus
Also called feline infectious eneritis, feline “distemper”, and feline ataxia or incoordination. Examples of other viruses belonging to the same genus as Feline panleukopenia virus include Canine parvovirus type 2, Porcine parvovirus, Mink enteritis virus, and Raccoon enteritis virus.
Virus Structure:
Feline panleukopenia virus (FPV) is a small (20 nm) autonomous , non –enveloped, icosahedral, single-stranded DNA virus that is approximately 5,120 nucleotides in legnth. The genome encodes for two genes which each form two proteins by alternative mRNA splicing. The non-enveloped capsid is assembled from 60 copies of a combination of the overlapping capsid proteins VP1 and VP2. The virus contains three capsid proteins. The capsids normally enter cells by clathrin-mediated endocytosis. Replication of the virus in the host occurs in cells that are rapidly dividing. FPV can survive in pH ranging from 3 to 9. The virus is highly resistant to most disinfectants (ether, chloroform, acid, alcohol, and heat), but is susceptible to Clorox bleach.
History and Natural Biology of Feline Panleukopenia Virus:
Feline panleukopenia is endemic to cats worldwide. The virus has been identified since the early 20th century. The virus is so severe that it was referred to as “cat plague” in earlier times when infections worldwide nearly wiped out cat populations in certain geographic areas. Now FPV rarely occurs in domestic populations in which vaccination is routinely practiced. There is a seasonality to the occurrence of FPV that usually coincides with the production of new populations of susceptible kittens. This seasonal effect may vary according to geographic location. In the northeastern United States, most cases of FPV are seen in the summer and early fall. However, outbreaks of FPV may occur at any time of the year. It is thought that feral domestic cat populations are a natural resevior for Feline panleukopenia virus.
Clinical Features and Viral Pathogenesis:
All members of the cat family (Felidae) are susceptible to infection with feline panleukopenia virus (FPV), as are raccoons, and minks, in the family Procyoniclae. Three major body sytems are affected by FPV. FPV specifically depresses the white blood cells and thus the immune system of the host, it attacks the rapidly reproducing cells lining the gut, and FPV affects the reproducing cells of the cerebellum and the retina of the eye when they are in their developing stage. The system it chooses depends on the age of the cat at the time of infection.
This extremely pathogenic zoonotic virus is now understood to travel from bat species, to equine intermediate hosts, to humans.[8, 10] The Hendra virus is listed as a Bio-Safety Level (BSL)-4, and can only be studied at a few adequately equipped laboratories worldwide due to its virulence.[1, 2] Case fatality rates
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Within the text of The Strange Case of Dr. Jekyll and Mr. Hyde, Robert Louis Stevenson portrays a complex power struggle between Dr. Jekyll, a respected individual within Victorian London society, and Mr. Hyde a villainous man tempted with criminal urges, fighting to take total control of their shared body. While Dr. Jekyll is shown to be well-liked by his colleagues, Mr. Hyde is openly disliked by the grand majority of those who encounter him, terrified of his frightful nature and cruel actions. Throughout Dr. Jekyll and Mr. Hyde, Stevenson portrays the wealthy side of London, including Mr. Utterson and Dr. Jekyll, as respected and well-liked, while showing the impoverish side as either non-existent or cruel.
Stevenson’s most prominent character in the story is the mysterious Mr Hyde. Edward Hyde is introduced from the very first chapter when he tramples a young girl in the street, which brings the reader’s attention straight to his character. The reader will instantly know that this person is a very important part of this book and that he plays a key role in the story. This role is the one of a respectable old man named Dr Jekyll’s evil side or a ‘doppelganger’. This links in with the idea of duality. Dr Jekyll is described as being ‘handsome’, ‘well-made’ and ‘smooth-faced’. On the other hand, Mr Hyde is described as being ‘hardly human’, ‘pale and dwarfish’, giving of an impression of deformity and ‘so ugly that it brought out the sweat on (Mr Enfield) like running’! These words all go together to conjure up an image in the mind of an animal, beast or monster. During the novel...
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Dr. Jekyll and Mr. Hyde is a riveting tale of how one man uncovers, through scientific experiments, the dual nature within himself. Robert Louis Stevenson uses the story to suggest that this human duality is housed inside everyone. The story reveals “that man is not truly one, but two” (Robert Louis Stevenson 125). He uses the characters of Henry Jekyll, Edward Hyde, Dr. Lanyon, and Mr. Utterson to portray this concept. He also utilizes important events, such as the death of Dr. Jekyll and the death of Mr. Lanyon in his exploration of the topic.
In the poem “Friendship”, Katherine Philips writes her perspective over love, marriage, and friendship. When describing love, Philips compares it to heaven, claiming, “nature subsists by love…Love chains the different elements in one great harmony, linked to th’ Heavenly Throne,” (Friendship, line 5-8) and if a person knows how to love, then they are worthy enough to do so, according to heaven. If one cannot love, they are thought to be worse than a beast. When Philips is writing of this incredible love, she is not referring to a romantic love, the love Philips describes would be the love throughout a friendship. Her opinion of marriage shows in lines 29-34, as she writes, “The marriage-tie hath much of honor and divinity, but lust, design, or some unworthy ends may mingle there.” Even though it is possible for marriage to be a wonderful life choice, the factors that could end that relationship do not exist in a friendship. Love is often misinterpreted into something it is not by those who are married in order to fit a couples relationship. It is only through a friendship that one feels real, true love. In line 33, Phillips writes that friendship is more of a mental aspect, rather than just the physicality of many marriages in the 18th century. Philips idea of many marriages is that they are “Like earthly fires…is with offensive smoke accompanied, and by resistance only is supplied” (Line 39-42), in order to keep a marriage going, one must constantly put in effort and watch it to be sure that the fire does not die, however, even if the relationship is working, a couple will still have on-going problems, much like a fire has constant smoke. Friendship, on the other hand, is a “fiery element, with it’s own heat and nourishment content.” (Lines 42-43) Very few things can truly affect a friendship; it does not need constant help because a good friendship is strong. Friendship to
Canine Heartworm Disease -. 01 Jan. 2014. Web. The Web. The Web.
is spread to humans by fleas from infected rodents. In the 1300s, fourth of the population
Jekyll and Mr. Hyde” depicted many aspects of psychoanalytical and biographical references in which moral choice played a role in the transformation between Jekyll into Hyde a cycle of identity disorder. “Stevenson thoughts at this time was the duality of man 's nature and alternation of good and evil” (77) states Graham Balfour representing how Jekyll morally distinguishes what his foil persona commits as wrong, but evil wins the battle conquering the goodness within himself. The image of god and satan correlate into their human characteristics one presents the righteousness of good will meanwhile evil is exposed inconsistently. In the end Hyde 's evil persona lies beneath Jekyll knowing that in an attempt of suicide Hyde will get destroyed. Ironically Jekyll 's given up his life, but Hyde regains dominance so that his body would be found. The historical victorian era in which the novels was written reveals how immoral life was lived in reality a way in which Stevenson used the protagonists Jekyll and Hyde “Hide” to fit his
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The purpose of this paper is to focus on a subject within my educational field that I can research and inform the public about. I plan to become a veterinarian .which would require my daily contact with humans and animals. Zoonotic diseases are risk factors that I have to be aware of in order to protect myself as well as my patients and their owners. Luckily developments in medicine have made it possible to cure zoonotic diseases and even prevent them from ever being contracted.