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Herpesviruses
... They have the ability to remain inactive (latent) in host cells often for long periods. Reactivation of viruses can occur. Set up latent or persistent infection following primary infection Reactivation are more likely to take place during periods of immunosuppression Both primary infection a ...
... They have the ability to remain inactive (latent) in host cells often for long periods. Reactivation of viruses can occur. Set up latent or persistent infection following primary infection Reactivation are more likely to take place during periods of immunosuppression Both primary infection a ...
Virus Diseases - Mrothery.co.uk
... One of the key questions faced by HIV researchers is what is happening to the virus & the immune system during this long asymptomatic phase of the disease. One of the first signs of illness is chronically swollen lymph nodes but it is only when CD4+ T-cell numbers drop dramatically that the infected ...
... One of the key questions faced by HIV researchers is what is happening to the virus & the immune system during this long asymptomatic phase of the disease. One of the first signs of illness is chronically swollen lymph nodes but it is only when CD4+ T-cell numbers drop dramatically that the infected ...
The RESPIRATORY System
... HIV Human Immunodeficiency Virus • Affects T cells within the immune system. • Attacks the RNA of the T cell. • Causes the T cell to alter its DNA to become HIV. • When infected T cell replicates, the T cell creates more HIV. • Death results in opportunistic infections. ...
... HIV Human Immunodeficiency Virus • Affects T cells within the immune system. • Attacks the RNA of the T cell. • Causes the T cell to alter its DNA to become HIV. • When infected T cell replicates, the T cell creates more HIV. • Death results in opportunistic infections. ...
Chicken Infectious Anemia
... presence of other related diseases such as gangrenous dermatitis, and hemorrhagic syndrome. o Low hematocrit values. o Virus isolation from infected livers. Inoculate the virus into ...
... presence of other related diseases such as gangrenous dermatitis, and hemorrhagic syndrome. o Low hematocrit values. o Virus isolation from infected livers. Inoculate the virus into ...
Epstein-Barr Virus
... Diagnosis confirmed by presence of Rubeola specific IgM antibodies antibodies or four-fold rise in IgG antibody titer in paired samples taken after rash to 10 to ...
... Diagnosis confirmed by presence of Rubeola specific IgM antibodies antibodies or four-fold rise in IgG antibody titer in paired samples taken after rash to 10 to ...
serotypes of FMD virus
... ..infectious agents of small size and simple composition that can multiply only in living cells of animals, plants and bacteria. Viruses are obligate parasites that are metabolically inert when they are outside their hosts. They all rely, to varying extents, on the metabolic processes of their hosts ...
... ..infectious agents of small size and simple composition that can multiply only in living cells of animals, plants and bacteria. Viruses are obligate parasites that are metabolically inert when they are outside their hosts. They all rely, to varying extents, on the metabolic processes of their hosts ...
Introduction to Virology
... Cervical smear test (Pap test) based on the recognition of morphologically abnormal cervical ...
... Cervical smear test (Pap test) based on the recognition of morphologically abnormal cervical ...
Disease causes09
... Prevention (CDC) each year occur in wild animals like raccoons, skunks, bats, and foxes. Infects the central nervous system, causing encephalopathy and ultimately death. ...
... Prevention (CDC) each year occur in wild animals like raccoons, skunks, bats, and foxes. Infects the central nervous system, causing encephalopathy and ultimately death. ...
Gonorrhoea - PapScreen Victoria
... Barry • 26 yo single male • 18 mo recurrent postcoital “thrush” • Responds to topical ...
... Barry • 26 yo single male • 18 mo recurrent postcoital “thrush” • Responds to topical ...
Viruses vs. Prokaryotes
... Retroviruses Retrovirus is an RNA animal virus with a DNA stage. Retroviruses contain reverse transcriptase that carries out reverse transcription producing cDNA. Viral cDNA is integrated into host DNA and is replicated as host DNA replicates. Viral DNA is transcribed; new viruses are produced ...
... Retroviruses Retrovirus is an RNA animal virus with a DNA stage. Retroviruses contain reverse transcriptase that carries out reverse transcription producing cDNA. Viral cDNA is integrated into host DNA and is replicated as host DNA replicates. Viral DNA is transcribed; new viruses are produced ...
Sexually Transmitted diseases
... It is NOT true that the virus can only be spread while the sores are present. The virus can be spread while the person is asymptomatic. Diagnosis is made through lab tests of the fluid from the blisters. Medication can relieve the symptoms, but can not cure the virus. Once it is contracted, the v ...
... It is NOT true that the virus can only be spread while the sores are present. The virus can be spread while the person is asymptomatic. Diagnosis is made through lab tests of the fluid from the blisters. Medication can relieve the symptoms, but can not cure the virus. Once it is contracted, the v ...
VACCINES: • attenuated viruses • inactivated viruses • purified viral
... program for eradicating smallpox, it continues to serve as a unique viral vector for production of foreign proteins in mammalian cells • Host is immunized against the viral vector, as well as the viral antigen. Subsequent uses of the same vector may result in a weak response, no response or an immun ...
... program for eradicating smallpox, it continues to serve as a unique viral vector for production of foreign proteins in mammalian cells • Host is immunized against the viral vector, as well as the viral antigen. Subsequent uses of the same vector may result in a weak response, no response or an immun ...
Chapter 19 Bacteria are prokaryotes- unicellular organisms without
... 3. Spores: When conditions are harsh, a spore containing DNA forms and grows when conditions are favorable again. Viruses are the smallest microbes. The are composed of a DNA or RNA core surrounded by a protein coat called a capsid. The capsid have receptors that allow it to attach to the cell surfa ...
... 3. Spores: When conditions are harsh, a spore containing DNA forms and grows when conditions are favorable again. Viruses are the smallest microbes. The are composed of a DNA or RNA core surrounded by a protein coat called a capsid. The capsid have receptors that allow it to attach to the cell surfa ...
RNA Viruses
... • Antigenic shift – one of the genes or RNA strands is substituted with a gene or strand from another influenza virus from a different animal host – Genome of virus consists of 10 genes encoded on 8 separate RNA strands ...
... • Antigenic shift – one of the genes or RNA strands is substituted with a gene or strand from another influenza virus from a different animal host – Genome of virus consists of 10 genes encoded on 8 separate RNA strands ...
infectious diseases
... Trichinella spiralis (The adult worms are found attached to or buried in the mucosa of the duodenum) Females produce living young (approximately 1,500 per female over a period of 4 to 16 weeks) and then die. Juveniles enter the lymphatics and mesenteric veins and are found throughout the arterial ci ...
... Trichinella spiralis (The adult worms are found attached to or buried in the mucosa of the duodenum) Females produce living young (approximately 1,500 per female over a period of 4 to 16 weeks) and then die. Juveniles enter the lymphatics and mesenteric veins and are found throughout the arterial ci ...
The Genetics of Viruses and Bacteria
... Viral proteins are translated by host enzymes and new viral particles are produced. Viral particles are assembled and the host cell is lysed. Host cell death occurs. Bacterial cells possess restriction endonucleases that destroy foreign DNA. The bacterial DNA is methylated to protect from ...
... Viral proteins are translated by host enzymes and new viral particles are produced. Viral particles are assembled and the host cell is lysed. Host cell death occurs. Bacterial cells possess restriction endonucleases that destroy foreign DNA. The bacterial DNA is methylated to protect from ...
guidance guidelines - UNSW Research Gateway
... cell line or the animal will no longer contain virus but will continue to express the gene of interest. The safety features incorporated into replication defective, retroviral vectors prevent the virus from remobilising. Therefore, stably transfected cells lines or animals infected with replication ...
... cell line or the animal will no longer contain virus but will continue to express the gene of interest. The safety features incorporated into replication defective, retroviral vectors prevent the virus from remobilising. Therefore, stably transfected cells lines or animals infected with replication ...
Infectious Disease - Sonoma Valley High School
... • Pathogen will always be found in the sick, not in the healthy • It must be isolated and grown as a culture • If placed in a new host, they will become infected • The pathogen taken from the 2nd host will be identical to the original ...
... • Pathogen will always be found in the sick, not in the healthy • It must be isolated and grown as a culture • If placed in a new host, they will become infected • The pathogen taken from the 2nd host will be identical to the original ...
Tips for Talking to Patients about Viral Respiratory Infection
... (Tylenol) if needed. 4. Explain what the patient can expect over the next few days and what to do if symptoms worsen. Example: “Your cough may last from several more days to several weeks, and it may take a while for you to feel better. I want you to call me if you’re still coughing after three we ...
... (Tylenol) if needed. 4. Explain what the patient can expect over the next few days and what to do if symptoms worsen. Example: “Your cough may last from several more days to several weeks, and it may take a while for you to feel better. I want you to call me if you’re still coughing after three we ...
Influenza - AAP Red Book - American Academy of Pediatrics
... Antigenic drift. Each year's flu vaccine contains 3 flu strains-2 A strains and 1 B strain-that can change from year to year. After vaccination, your body produces infection-fighting antibodies against the 3 flu strains in the vaccine. If you are exposed to any of the 3 flu strains during the flu se ...
... Antigenic drift. Each year's flu vaccine contains 3 flu strains-2 A strains and 1 B strain-that can change from year to year. After vaccination, your body produces infection-fighting antibodies against the 3 flu strains in the vaccine. If you are exposed to any of the 3 flu strains during the flu se ...
Bacteria and Virus Power
... Replication of a Retrovirus - HIV Virus binds to receptors on white blood cells; viral ...
... Replication of a Retrovirus - HIV Virus binds to receptors on white blood cells; viral ...
Infectious Diseases Cloze Worksheet
... water is lost by sweating. If too much body is lost in a short time, the person may experience ‘chills’. Carrier - a person who is infected with pathogenic micro-organisms in the body but shows no of the disease Antibiotic - the chemical treatment used to treat all infections except those caused by ...
... water is lost by sweating. If too much body is lost in a short time, the person may experience ‘chills’. Carrier - a person who is infected with pathogenic micro-organisms in the body but shows no of the disease Antibiotic - the chemical treatment used to treat all infections except those caused by ...
Herpes simplex virus
![](https://commons.wikimedia.org/wiki/Special:FilePath/Herpes_simplex_virus_TEM_B82-0474_lores.jpg?width=300)
Herpes simplex virus 1 and 2 (HSV-1 and HSV-2), also known as human herpesvirus 1 and 2 (HHV-1 and HHV-2), are two members of the herpesvirus family, Herpesviridae, that infect humans. Both HSV-1 (which produces most cold sores) and HSV-2 (which produces most genital herpes) are ubiquitous and contagious. They can be spread when an infected person is producing and shedding the virus. Herpes simplex can be spread through contact with saliva, such as sharing drinks.Symptoms of herpes simplex virus infection include watery blisters in the skin or mucous membranes of the mouth, lips or genitals. Lesions heal with a scab characteristic of herpetic disease. Sometimes, the viruses cause very mild or atypical symptoms during outbreaks. However, as neurotropic and neuroinvasive viruses, HSV-1 and -2 persist in the body by becoming latent and hiding from the immune system in the cell bodies of neurons. After the initial or primary infection, some infected people experience sporadic episodes of viral reactivation or outbreaks. In an outbreak, the virus in a nerve cell becomes active and is transported via the neuron's axon to the skin, where virus replication and shedding occur and cause new sores. It is one of the most common sexually transmitted infections.