• Study Resource
  • Explore
    • 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
How I treat respiratory viral infections in the setting of
How I treat respiratory viral infections in the setting of

... MD Anderson Cancer Center, the patient in case 2 would have moderate risk of LRTI and mortality and potentially an intermediate benefit of ribavirin treatment.5 Interestingly, the patient presented late (.5 years) after transplantation, and the benefit of treatment (including ribavirin) is poorly stud ...
Document
Document

... horses showed signs of coughing and nasal discharge during a 9-wk period (Fig. 1). An American sublineage H3N8 equine influenza virus, previously not identified in the United Kingdom, was responsible for the outbreak. Many infected horses had been vaccinated within the previous 3 mo with a vaccine t ...
Potential spread of highly pathogenic avian influenza H5N1 by
Potential spread of highly pathogenic avian influenza H5N1 by

... H5N1 over extensive distances, being able to perform movements of up to 2900 km within timeframes compatible with the duration of asymptomatic infection. 4. However, the likelihood of such virus dispersal over long distances by individual wildfowl is low: we estimate that for an individual migratory ...
production of hyperimmune serum against infectious bursal disease
production of hyperimmune serum against infectious bursal disease

... vaccines did not cause considerable irritation as no untoward reaction or granuloma was observed after injection. The IHA antibody titer was higher in rabbits inoculated with live adjuvanted virus compared to plain viruses of Phase I. The IHA antibody titer in killed oil based vaccinated group start ...
more information
more information

... November 4, 1999, the U.S. White House announced,.... “Within a period as short as five years, all new infections of HIV in the United States will be African American....” At some point our experts must be allowed to begin the interface process of allowing the history of this virus program to count. ...
Pediatric Pathogens and Impact on the Adult Population
Pediatric Pathogens and Impact on the Adult Population

... discontinue PCR, isolation can be discontinued when patient has been asymptomatic for at least 5 days AND respiratory PCR is negative ...
Negative Sero-occurrence of Infectious Bursal Disease
Negative Sero-occurrence of Infectious Bursal Disease

... detected from quail, with infected birds showing no signs of the disease (El-Zoghby et al 2012; Ferro et al 2012). In Egypt, molecular analyses showed that the virus was phylogenetically very close to those affecting other poultry suggesting epidemiological links (El-Zoghby et al 2012). This was als ...
Malware - Jackson State University
Malware - Jackson State University

... virus, inform the user and deactivate or remove the virus. So, a virus scanner is effective only if it has been kept up-to-date with the latest information on current viruses. Some viruses employ techniques that make detection by means of signatures difficult. These viruses modify their code on each ...
Are Animal Tumor Viruses Always Virus-Like?
Are Animal Tumor Viruses Always Virus-Like?

... of knowing just how much of the large amount of specifically fluorescent material demonstrable in the nuclei of cells of the cottontail papillomas represents complete virus and how much, if any of it, is merely viral antigen. Conversely, there is no way of knowing, from the use of this technique wit ...
Role of viral load in the pathogenesis of chicken anemia virus
Role of viral load in the pathogenesis of chicken anemia virus

... and four were stunted with unilateral abnormalities of the eye. The organs from six individual surviving embryos at day 20 were harvested and extracts were prepared for testing for CAV viral load by the microplate DNA-hybridization assay. The CAV copy number for the various organs was 3?6–8?6 log10 ...
MS_Word ~ 493 KB
MS_Word ~ 493 KB

... containment measure in the event of an influenza pandemic. Antivirals are currently being stockpiled due to the threat of a pandemic so supplies for other uses such as prophylaxis and treatment for seasonal influenza are constrained. 4. Existing data on influenza hospitalisations underestimate the t ...
Human Immunoglobulin as a Treatment for West Nile Virus Infection
Human Immunoglobulin as a Treatment for West Nile Virus Infection

... models when antibody was given during the viremic phase; however, nearly all patients with West Nile virus infection are no longer viremic when they present, and most have already developed IgM antibody [27, 28]. Another limitation was that even the lower infecting dose used by BenNathan et al. [5] ...
Seroprevalence of Newcastle Disease, Chicken Infectious Anemia
Seroprevalence of Newcastle Disease, Chicken Infectious Anemia

... samples were negative for AIV. Douglas et al. (2007) reported isolation and characterization of AIV from wild water fowl in Barbados. In Grenada, Arathy et al. (2011), reported a seroprevalence of 18.8% for antibodies against AIV in backyard chickens. AIV ribonucleic acid (RNA) was not detected in t ...
Lysogeny and Lytic Viral Production during a Bloom of the
Lysogeny and Lytic Viral Production during a Bloom of the

... community are unknown. Under natural conditions, only a small percentage of lysogens are likely to be induced at any given time, resulting in a minor effect on microbial mortality. As only a small percentage of Synechococcus cells were clearly induced by mitomycin C, temperate viruses may have had l ...
USMLE Step 1 Web Prep — Medically Important Viruses, Part 3
USMLE Step 1 Web Prep — Medically Important Viruses, Part 3

... 3. The RNA is copied using the virion-associated reverse transcriptase;ultimately ds DNA with long terminal repeats is made. 4. The DNA and integrase migrate to nucleus and the DNA is integrated into host DNA forming the provirus. The provirus remains in the host DNA. The rate of viral replication i ...
Detection and Identification of Infectious Bursal Disease Virus in
Detection and Identification of Infectious Bursal Disease Virus in

... autoproteolysis to yield mature VP2, VP3, and VP4 proteins [5]. The major structural proteins of the virion are VP2 and VP3 while VP4 is a minor protein share in the processing of the precursor protein single-shelled, [4]-[6]. The major protective antigen of IBDV is the VP2 protein that contains spe ...
Investigating Infectious Diseases
Investigating Infectious Diseases

... What causes all these millions of colds? Viruses. There are more than 200 different cold viruses. Like all viruses, they can multiply only inside living cells. The cold starts when a virus gets into your nose. The virus invades the cells of the mucous membrane, which lines the nose. It begins to mul ...
Erika – Gastrointeritis
Erika – Gastrointeritis

... vomitus. Virus-like particles produced by expression of capsid proteins in a recombinant baculovirus vector have been used to develop enzyme immunoassays (EIAs) for detection of virus in stool or a serologic response to a specific viral antigen. These newer diagnostic techniques are considerably mor ...
Viral meningitis
Viral meningitis

... The typical viruses that cause viral meningitis can spread to close contacts, such as household members, friends and colleagues. The virus can be spread from just before an infected person gets sick; the person will then be infectious for about another week. Only some people who get infected will de ...
Hepatitis C virus - HAL
Hepatitis C virus - HAL

... viral particles, the studies differed in the hepatoma cell lines used. Whereas Wakita and colleagues transfected and infected native Huh7 cells as well as a highly permissive Huh7derived cell clone, the Rice and Chisari labs used Huh7.5 and Huh7.5.1 cells for the generation of virions and infectivit ...
Information on Arboviral Encephalitides
Information on Arboviral Encephalitides

... vertebrate host and a primary arthropod vector. These cycles usually remain undetected until humans encroa ch on a natural focus, or the virus escapes this focus via a secondary vector or vertebrate host as the result of some ecologic change. Humans and domestic animals can develop clinical illness ...
refractoriness of Indian Aedes aegypti to oral Infection with Yellow
refractoriness of Indian Aedes aegypti to oral Infection with Yellow

... the virus to humans3,4. An estimated 200,000 cases of yellow fever occurs each year worldwide, with the case-fatality rate of ~15 per cent5. From 1700 to early 1900, YF outbreaks were recorded, however close study of this disease was done during Spanish-American War and construction of the Panama Ca ...
Equine West Nile Encephalitis: Epidermiological and Clinical
Equine West Nile Encephalitis: Epidermiological and Clinical

... between birds and mammals.6 Despite the range of ecologic and climatic conditions in the United States, the variety of WN virus-permissive native avian and mosquito hosts forecast few limitations for geographic spread. Historically, WN virus infections in humans often presented as mild, acute febril ...
Concern over Zika virus outbreak: another alarming global
Concern over Zika virus outbreak: another alarming global

... health risk to many countries. It has showed not only unexpected congenital birth defects but also serious neurological manifestations which emphasize on its awareness, prevention, and eradication in a coordinated way. Hence, immediate actions should be taken in the affected region. It has establish ...
Evolution of New Variant Strains of Infectious Bronchitis Virus
Evolution of New Variant Strains of Infectious Bronchitis Virus

... cystic oviducts, abnormal egg and egg-drop (Cavanagh and Gelb, 2008; Cavanagh and Naqi, 2003). Infections may lead to mortality up to 20-30% or higher at five to six weeks of age in chicken flocks (Ignjatovic et al., 2002; Seifi et al., 2010) Its genome consists of a single-stranded positive RNA mol ...
< 1 ... 53 54 55 56 57 58 59 60 61 ... 198 >

Influenza A virus



Influenza A virus causes influenza in birds and some mammals, and is the only species of influenza virus A. Influenza virus A is a genus of the Orthomyxoviridae family of viruses. Strains of all subtypes of influenza A virus have been isolated from wild birds, although disease is uncommon. Some isolates of influenza A virus cause severe disease both in domestic poultry and, rarely, in humans. Occasionally, viruses are transmitted from wild aquatic birds to domestic poultry, and this may cause an outbreak or give rise to human influenza pandemics.Influenza A viruses are negative-sense, single-stranded, segmented RNA viruses.The several subtypes are labeled according to an H number (for the type of hemagglutinin) and an N number (for the type of neuraminidase). There are 18 different known H antigens (H1 to H18) and 11 different known N antigens (N1 to N11). H17 was isolated from fruit bats in 2012. H18N11 was discovered in a Peruvian bat in 2013.Each virus subtype has mutated into a variety of strains with differing pathogenic profiles; some are pathogenic to one species but not others, some are pathogenic to multiple species.A filtered and purified influenza A vaccine for humans has been developed, and many countries have stockpiled it to allow a quick administration to the population in the event of an avian influenza pandemic. Avian influenza is sometimes called avian flu, and colloquially, bird flu. In 2011, researchers reported the discovery of an antibody effective against all types of the influenza A virus.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report