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Infection prevention and control (IPC) precautions for patients
Infection prevention and control (IPC) precautions for patients

... Symptoms include fever, cough, and often sore throat, coryza, sneezing, shortness of breadth, wheezing, or difficulty breathing Infectious respiratory diseases include seasonal influenza, respiratory syncytial and parainfluenza virus Additional precautions for aerosol generating procedures are recom ...
Ch 19 Notes - Dublin Schools
Ch 19 Notes - Dublin Schools

... • Viral diseases in a small isolated population can emerge and become global • New viral diseases can emerge when viruses spread from animals to humans • Viral strains that jump species can exchange genetic information with other viruses to which humans have no immunity Copyright © 2008 Pearson Educ ...
PPT - Institute for Mathematical Sciences
PPT - Institute for Mathematical Sciences

... the number of children “confined to bed” is the timing of ascertainment, since confinement to bed is not in fact equivalent to biological infectiousness (viral shedding).” - Confinement to bed (for symptomatic reasons) implies a symptomatic state. This can be variable in severity and in degree of to ...
SESSION 8: VIRUSES AND BACTERIA Key Concepts
SESSION 8: VIRUSES AND BACTERIA Key Concepts

... up immunity against a second flu attack from the same type of virus. However, you are not immune to any other strains of flu viruses. Flu injections, which protect against flu infections, are also not 100% effective because flu viruses are able to mutate. Therefore, the vaccine against flu must be a ...
Avian Gyrovirus 2 and Avirulent Newcastle Disease Virus Coinfection in... Flock with Neurologic Symptoms and High Mortalities
Avian Gyrovirus 2 and Avirulent Newcastle Disease Virus Coinfection in... Flock with Neurologic Symptoms and High Mortalities

... Chu et al. (3) suggested that AGV and HGV are essentially the same virus with nucleotide homology of .92%, as they could find no phylogenetic distinction between viruses of human or chicken origin. The genomes of AGV2 and CAV are only about 40% identical (10). GyV3 and GyV4 were also discovered in h ...
virus - Perry Local Schools
virus - Perry Local Schools

... • Vaccines are harmless derivatives of pathogenic microbes that stimulate the immune system to mount defenses against the actual pathogen • Vaccines can prevent certain viral illnesses • Viral infections cannot be treated by antibiotics • Antiviral drugs can help to treat, though not cure, viral in ...
2 - Primary Science Teaching Trust
2 - Primary Science Teaching Trust

... "There was a mild wave in the spring, but the very serious, lethal wave was in the autumn to the winter," says Professor Markel. "Then a third wave in January to April 1919, and a fourth wave in the winter of 1920." This tendency for "waves" of infection and re-infection makes the virus yet more unp ...
Complete Coding Sequence of the Alkhurma Virus, a Tick
Complete Coding Sequence of the Alkhurma Virus, a Tick

... because TB flaviviruses responsible for hemorrhagic fever in humans had been isolated previously only in Siberia (Omsk hemorrhagic fever virus, OHFV) and in India (Kyasanur Forest disease virus, KFDV). The sequence determination of ALKV NS5 gene suggested that the virus was closely related to KFDV ( ...
Where do emerging pathogens come from?
Where do emerging pathogens come from?

... 25 years (Fig. 1). Some species within this category likely were active before they were identified. For example, although HIV-1 was first reported in 1983, it is thought to have begun infecting humans several decades earlier. Two-thirds of these novel species are RNA viruses, a finding that may par ...
Cedratvirus, a Double-Cork Structured Giant Virus, is a Distant
Cedratvirus, a Double-Cork Structured Giant Virus, is a Distant

... protocol based on the gating strategy [12] and we detected the presence of a mix of a mimivirus and new unidentified particles population in one sample. The negative staining performed on this sample culture supernatant revealed the presence of new doubled cork shaped particles corresponding to the ...
MERS PowerPoint
MERS PowerPoint

... East Respiratory Syndrome Coronavirus) - over 200 confirmed cases in the Arabian Peninsula since the beginning of April 2014. Imported cases have been reported in Egypt, Greece, Malaysia, the Philippines and most recently the United States, where two cases were recently seen. What is the risk of the ...
bvd the disease - Animal Health Ireland
bvd the disease - Animal Health Ireland

... trade or otherwise, then it would become transiently infected (TI) for a short period before becoming immune and developing antibodies. TI animals are much less efficient transmitters of virus than PI animals but nonetheless can transmit the virus. In addition, if the animal becomes TI during early ...
NEW AND EMERGING INFECTIOUS DISEASES
NEW AND EMERGING INFECTIOUS DISEASES

... Cases: 1 Nov 2003 to 31 July 2004 Deaths ...
Article for May, 2001 Alive magazine
Article for May, 2001 Alive magazine

... The panic is hard to understand because, for more than 99% of people who test positive for WNV antibodies, the virus will bring them less than a bad headache or a fever, and most whose deaths are blamed on the virus are at least in their late 70’s [MMWR, 2002a]. A household survey in 1999 in the New ...
Student Activity DOC - TI Education
Student Activity DOC - TI Education

... trials. In the screen at the right, there were 10 trials, so 10 was entered for Xmax. If your simulation took more than 10 trials, enter that number for Xmax. The Ymax value is the maximum number of students in the class. In this case the setting is bigger so we will be able to see the graph of all ...
1. Properties of Bacterial Pathogens
1. Properties of Bacterial Pathogens

... Antibacterial- commonly used to describe agents to reduce or eliminate harmful bacteria Antibiotic is a type of antimicrobial used as medicine for humans, animals- originally referred to naturally occurring compounds misconceptions ...
Culex Flavivirus Isolates from Mosquitoes in Guatemala
Culex Flavivirus Isolates from Mosquitoes in Guatemala

... 210 pools (1,699 mosquitoes), eight tested positive, and six of these mosquito pools produced virus isolates in Aedes albopictus Skuse C6/36 cells. Nucleotide sequence comparison of the eight ßavivirus RNA-positive pools showed that there was 100% identity among them, and phylogenetic analysis of th ...
Presented - RTI International
Presented - RTI International

... were in brooding houses but all 10 tested positive within 12-63 days of moving to rice fields z Backyard poultry: 56% of backyard chicken flocks and 27% of ...
IMMUNIZATIONS FOR HEALTH CARE WORKERS
IMMUNIZATIONS FOR HEALTH CARE WORKERS

... – If positive/immune – no need for future doses or periodic blood tests to check for immunity • 100% effective when develop positive antibody response after vaccination – If negative/not immune – repeat 3 dose series • If positive/immune – done • If negative/not immune – non-respondersusceptible to ...
convención sobre las especies migratorias
convención sobre las especies migratorias

... The goal of the meeting was to address the migratory bird and environmental aspects of the highly pathogenic avian influenza (HPAI) subtype H5N1 epidemic. Sound scientific information, including an understanding of the environment and migratory bird populations, is a necessity for understanding the ...
The Middle East Consortium on Infectious Disease Surveillance
The Middle East Consortium on Infectious Disease Surveillance

... The group discussed circumstances under which countries would assist each other during an influenza pandemic. The assumption is that the countries which can not afford will be helped by the countries which can afford themselves. In addition to legal commitments and international political commitment ...
Replication of Small DNA Viruses
Replication of Small DNA Viruses

... Animal Virus DNA Genomes • Larger size range (5 – 200 kbp) than RNA viruses • Similar to host genome, may use cell machinery for DNA replication & transcription • Problems of dependence on host cell for DNA replication: – Cell must be in S phase for DNA synthesis – DNA synthesis can’t occur at ends ...
Chapter 18
Chapter 18

... are needed to see this picture. ...
Can you guess the structure?
Can you guess the structure?

... bacterium in harsh conditions 22. What are the three main shapes of a typical bacterium? 23. What term is used to describe a virus or bacteria that cause diseases? 24.Amoeba have these, also known as false feet. 25.These plant-like protists also have animal-like characteristics. ...
LBC-101 Unit -1 Lect
LBC-101 Unit -1 Lect

... of coat protein (see image to the left) and one molecule of genomic single strand RNA 6400 bases long. The coat protein self-assembles into the rod like helical structure (16.3 proteins per helix turn) around the RNA which forms a hairpin loop structure (see the electron micrograph above). The prote ...
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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.
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