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Viruses - Food Safety Site
Viruses - Food Safety Site

... About 20,000-30,000 cases of HAV are reported in the U.S. annually, and approximately 140 of these are due to contaminated foods. Most of these foodborne outbreaks are due to mishandling of food by infected individuals. The other major source is eating fecal-contaminated shellfish. An enormous outb ...
emerging and reemerging viral infectious diseases
emerging and reemerging viral infectious diseases

... • SIVcpz and SIVsm have existed for millennia HIV-1 and HIV-2 are direct descendants from SIVcpz (Chimpanzee) (Cameroon, Gabon, DRC, central Africa) and SIVsm (Sootey Mangabey) (Sierra Leone, Liberia). SIVcpz and SIVsm have existed for thousands of years and no longer cause discernable disease in th ...
Requirements for Infection
Requirements for Infection

... layer. Therefore, cuts or wounds limited to this layer are less likely to spread beyond the site of entry. In contrast, the dermis is associated with blood vessels, and cuts or wounds that involve this layer or go deeper are far more likely to cause more serious systemic infections. This is even mor ...
Indicator Microorganisms
Indicator Microorganisms

... wastes contain large numbers of microbes (~100 billion/gram).  Constitute ~1/3rd the mass of human fecal matter  Most are beneficial or essential in the gut; not pathogens  Some gut microbes are human pathogens; they cause disease. – Human pathogens can be shed in human and animal feces. – Humans ...
Zoonotic aspects of vector-borne infections
Zoonotic aspects of vector-borne infections

... Vector-borne diseases are principally zoonotic diseases transmitted to humans by animals. Pathogens such as bacteria, parasites and viruses are primarily maintained within an enzootic cycle between populations of non-human primates or other mammals and largely non-anthropophilic vectors. This ‘wild’ ...
Document
Document

... material or body fluids. Wash hands frequently. ...
Infectious diseases DNA viruses
Infectious diseases DNA viruses

... material or body fluids. Wash hands frequently. ...
Viruses and emerging diseases - n°6
Viruses and emerging diseases - n°6

... polarized RNA genome. BDV has unique properties and is characterized by its ability to replicate and transcribe its genome inside the cell nucleus and has developed a complex strategy for regulating its gene expression. Neurological diseases caused by BDV were first described in horses and other far ...
Drivers for the emergence and re-emergence of
Drivers for the emergence and re-emergence of

... where infection is most prevalent. 2.2. Animal health and economic burden Domestic animals serve as companions to humans, a means of transportation or work in many countries and a source of food for a world with a rapidly growing human population (Schillhorn van Veen, 1999; Melendez, 2000). Domestic ...
Emerging viral infections in a rapidly changing world
Emerging viral infections in a rapidly changing world

... attention when it spread from its original range (Africa, the Middle East and Europe) to North America, where it first appeared in New York in 1999 [22,23]. By phylogenetic analysis, the 1999 New York isolate most closely resembles that of a WNV isolate from Israel in 1997, suggesting that it origi ...
Chapter 14
Chapter 14

... be reisolated from the diseased experimental host. ...
Fax: (760) 750-3208
Fax: (760) 750-3208

... fluids poses a significant health risk because these may contain bloodborne pathogens such as: Human Immunodeficiency Virus Bloodborne Hepatitis Viruses Hemorrhagic Fever Viruses (Ebola, Marburg, etc.) The greatest occupational exposure potential for the laboratory worker is a puncture wound from a ...
Oomycetes and fungi: two groups of pathogens on marine algae
Oomycetes and fungi: two groups of pathogens on marine algae

... Norris was reported by Kohlmeyer and Volkmann-Kohlmeyer (2003 ), however, they pointed that the association between the host alga and T. ulvae is mycophycobiosis. 3.3 Mitosporic fungi infecting marine algae Only one species, Sphaceloma cecidii Kohlm., was reported exclusively in galls caused by spe ...
Whole genome sequencing of top priority nontuberculous
Whole genome sequencing of top priority nontuberculous

... Treatment options are very limited for patients infected with nontuberculous mycobacterial (NTM) infections including Mycobacterium avium complex and the Mycobacterium abscessus group. These organisms are intrinsically resistant to most antimicrobial agents. Such infections therefore are difficult t ...
Bloodborne Pathogens
Bloodborne Pathogens

... Student Instructions: Print and sign your name. Also, provide your date of birth or the last four digits of your social security number. ...
mer artiklar
mer artiklar

... New data demonstrate that ' E. granulosus', the causative agent of CE, is an assembly of several, rather diverse, species and genotypes that show fundamental differences, not only in their epidemiology, but also in their pathogenicity to humans. This fact may explain the unequal distribution of high ...
the determinants of spread of ebola virus disease
the determinants of spread of ebola virus disease

... Abstract: The paper summarizes available evidence regarding the determinants of spread of Ebola virus disease, including health care and community related risk factors. It was observed that the level of uncertainty for the estimations is relatively high which may hinder to make some predictions for ...
The presentation template
The presentation template

... Airborne pathogens and disease spreading 0.001 to 1000 mm •There is strong evidence suggesting a link between ventilation and the transmission/spread of infectious diseases in indoor environments (Li et al 2007). •The recent H1N1 pandemic is just one example of the threat that airborne pathogens po ...
Definition of a vector and a vector-borne disease
Definition of a vector and a vector-borne disease

... arthropod) capable of transmitting a disease to vertebrate hosts, including humans. A basic distinction can be made between mechanical vectors and biological vectors. Mechanical vectors, in any of the classes of haematophagous arthropods, are infected during a blood meal with a microorganism which i ...
Adaptation of mammalian host-pathogen
Adaptation of mammalian host-pathogen

... anticipated further decrease of sea ice extent [6]. Most recent discussions focus on habitat loss and changes in food availability, however, infectious disease agents are also predicted to change their impact on mammalian populations. Predicted changes include the expansion of arthropod vectors into ...
Introduction to Google Adwords
Introduction to Google Adwords

... often transmitted to a developing child before birth. For most healthy persons who acquire CMV after birth there are usually few symptoms, however some persons experience a mononucleosis-like syndrome with prolonged fever and a mild hepatitis. CMV usually remains dormant unless the person's immune s ...
the origin of specificity by means of natural selection
the origin of specificity by means of natural selection

... genetic-distance component to be also present, with more distantly related host populations being less resistant to the pathogen of the source host population. Resistance to human malaria provides a good example for evolved resistance. The high frequency of the sickle-cell alleles in central Africa ...
OSH And Infection Control PowerPoint
OSH And Infection Control PowerPoint

... body fluids collected from patients. They will also be responsible for taking blood which involves the use of needles. Exposure to blood and body fluids can also happen through open cuts or contact with mucus membranes. ...
Megan Morris - Michigan Mosquito Control Association
Megan Morris - Michigan Mosquito Control Association

... occurred in Michigan as recently as 1995, making mosquitoes a potential host of re-emerging disease in the U.S. Precise identification of species and subspecies is important because different species of mosquito differ greatly in their breeding areas, time of feeding, and choice of host. This great ...
Antiviral Research Rapid sequence-based diagnosis of viral infection
Antiviral Research Rapid sequence-based diagnosis of viral infection

... of candidates considered is platform-dependent and can range from less than ten with multiplex PCR, to thousands with microarrays, to the entire tree of life with high-throughput pyrosequencing. Although costs and ease of use are improving, only multiplex PCR assays are widely used at the time of wr ...
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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.
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