• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Disease detectives
Disease detectives

... generated have to be processed in a way that is useful for forensic purposes, he says: if software or methods for developing the phylogenies are not properly validated, findings could be challenged in court. Many useful applications developed in academia may not be subjected to such validation becau ...
Spring 2009 - AVC Online
Spring 2009 - AVC Online

... What is the difference between an intermediate host and a definitive host for helminths? ...
Excerpts on Ebola virus from
Excerpts on Ebola virus from

... It is of interest to determine, what, if any, limits are placed on virus variation. Despite high mutation rates and opportunities for genetic reassortment, many factors act to minimize emergence of new influenza A epidemics (Morse and Schluederberg 1988). even though avian and human influenza viruse ...
Introduction to Environmentally Transmitted Pathogens
Introduction to Environmentally Transmitted Pathogens

... • The study of the distribution of health-related states or events in specified populations and the application of this study to the control of health problems. • Epidemiology includes: – 1) methods for measuring the health of groups and for determining the attributes and exposures that influence he ...
Escherichia coli ST131: a model for high-risk transmission
Escherichia coli ST131: a model for high-risk transmission

... and bloodstream infections worldwide. A recent WHO report states that resistance to one of the most widely used antibiotics (fluoroquinolones [FQs]) is very widespread. In many parts of the world, FQs are now ineffective in more than half of patients. A single E. coli clone, ST131, is predominantly ...
What is a Pathogen?
What is a Pathogen?

... Pathogens include bacteria, viruses, fungi, protozoa, and a newly discovered class of pathogens prions. Pathogens invade from outside the body and there are several substrates and pathways wherein they invade a host. As a group they are accounted for a large portion of human diseases. BACTERIA: Thou ...
“living together” Symbiosis Phoresis
“living together” Symbiosis Phoresis

...   Nematodes: elongated worms with rigid cuticule   Arthropodes: insects, ticks and mites which either are parasitic or transmit parasites as vectors   (we only have time to discuss the most important groups causing human and some animal disease, there are many additional parasites outside these g ...
chapter 6 transmission of infection, the compromised host
chapter 6 transmission of infection, the compromised host

... mechanisms involved in the frequency and spread of disease and other health-related problems. • Epidemiology can be used not only as a tool to study disease but also as a way to design methods for the control and prevention of diseases. ...
Chapter 7
Chapter 7

... molecules that are synthesized within the microorganism and secreted into the host tissues by the microbe. The ability to produce toxins is called toxigenicity. Exotoxins are readily soluble in body fluids and are rapidly transported throughout the body. There are three principal types: cytotoxins, w ...
Infectious Diseases
Infectious Diseases

... a long whip-like structure that pulls the protist and pulls food into its mouth. Euglena ...
doc Pathogenesis
doc Pathogenesis

... fibrosis patients (thick mucus cannot clear bacteria). It is the cause of death of many CF patients. ...
Lecture_3_Jan 08, 2015
Lecture_3_Jan 08, 2015

... Etiologic agent: organism that causes disease Etiology: Study of the course of the disease Disease: symptoms in host caused by infectious organism Zoonotic disease: disease that moves from animals to humans Many human diseases are considered zoonotic….. WHY? Swine flu. Avian flu, SARS, HIV-AIDS, pla ...
Introduction to infectious diseases
Introduction to infectious diseases

... • Can replicate only by infecting a host cell and “high-jacking” its machinery. • Co-evolved viruses interact with many host systems, and often try to block specific or general immune functions. • Carry genetic information as DNA or RNA. Genomes range from 3 kb-1.2 Mb) • Evolve very fast due to shor ...
JLS_ASI1
JLS_ASI1

... Multiplication within host Multiple infections (usually) don’t matter Short generation time  rapid evolution No specialized infective stages Often lead to crisis in host… immunity or death Infections can be transient or chronic Dynamic unit: host infection/immune status (Susceptible-Infectious-Reco ...
File
File

... to another without any ill effect. For example, most Ebola viruses and the Hanta virus, do not cause disease in their host animals, but they are deadly to man. The Ebola-Reston virus, on the other hand, is deadly to monkeys but does not cause illness in humans.  Viral illnesses can be spread in a n ...
I. Exposure - Sustainable Sanitation
I. Exposure - Sustainable Sanitation

... Leptospira interrogans - low prevalence Salmonella typhi, Salmonella paratyphi - developing countries, faecal-oral transmission more common Schistosoma haematobium - fresh water snail needed for development low risk for transmission of infectious diseases through urine ...
Infectious and Noninfectious Disease Study Guide
Infectious and Noninfectious Disease Study Guide

... H1N1 (Swine Flu) HIV/AIDS Chicken Pox Common Cold Lyme's Disease ...
1D17 – BD0039 Code Questions Answers 1 Describe briefly about
1D17 – BD0039 Code Questions Answers 1 Describe briefly about

... The patient is exposed to a variety of micro-organisms during hospitalization. Contact between the patient and a micro-organism does not by itself necessarily result in the development of clinical disease – other factors influence the nature and frequency of nosocomial infections. The likelihood of ...
Infectious Diseases - Biology-Resource-Package-11C
Infectious Diseases - Biology-Resource-Package-11C

... Viruses and Disease  Viruses depend on host cells to survive and ...
Section 4 Infectious Diseases
Section 4 Infectious Diseases

... encountered before the pathogens are able to cause disease. • Lymphatic system is a network of vessels that collects fluid from the tissues of your body and returns it to the blood. ...
Cabot Public Schools
Cabot Public Schools

... PRINT and COMPLETE, then RETURN TO SCHOOL NURSE in your building before Sept 15, YEARLY Employee Name______________________________________________Building___________________ (True or False) ...
Microbial Pathogenesis and infection
Microbial Pathogenesis and infection

... example, Diphtheria toxin cause cell death by inhibition of protein synthesis. Enterotoxins cause watery or bloody diarrhea by stimulation of adenylate cyclase. Tetanus toxin cause paralysis by effect on neurotransmitters, and so on. Endotoxins less potent than exotoxins and produce similar effects ...
Research Interests
Research Interests

... examining the ability of these viruses to spread to new regions. As such, I have been examining the susceptibility of Florida mosquitoes to viruses they have thus far not encountered in Florida. Along with two PhD students and a colleague (Dr. Mores), I am examining how mosquitoes from Florida respo ...
Transmission of Pathogens Throughout Healthcare Facilities
Transmission of Pathogens Throughout Healthcare Facilities

... frequent route of transmission is through indirect contact, which occurs when an infected patient or individual touches – and contaminates—an object or surface and subsequent contact between that item and another patient or individual occurs1. During general care and medical treatment, the hands of ...
B1.1 - Keeping healthy specification
B1.1 - Keeping healthy specification

... Higher Tier – you should understand that:  Antibiotics kill individual pathogens of the non-resistant strain  Individual resistant pathogens survive and reproduce, so the population of the resistant strain increases.  Now, antibiotics are not used to treat non-serious infections, such as mild thr ...
< 1 ... 52 53 54 55 56 57 58 59 60 ... 66 >

Cross-species transmission

Cross-species transmission (CST) is the phenomenon of transfer of viral infection from one species, usually a similar species, to another. Often seen in emerging viruses where one species transfers to another which in turn transfers to humans. Examples include HIV-AIDS, SARS, Ebola, Swine flu, rabies, and Bird flu.The exact mechanism that facilitates the transfer is unknown, however, it is believed that viruses with a rapid mutation rate are able to overcome host-specific immunological defenses. This can occur between species that have high contact rates. It can also occur between species with low contact rates but usually through an intermediary species. Bats, for example, are mammals and can directly transfer rabies to humans through bite and also through aerosolization of bat salvia and urine which are then absorbed by human mucous membranes in the nose, mouth and eyes.Similarity between species, for example, transfer between mammals, is believed to be facilitated by similar immunological defenses. Other factors include geographic area, intraspecies behaviours, and phylogenetic relatedness. Virus emergence relies on two factors: initial infection and sustained transmission.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report