Results 11 to 20 of about 1,547,632 (301)

Pathogenicity and virulence of chikungunya virus

Virulence
Chikungunya virus (CHIKV) is a mosquito-transmitted, RNA virus that causes an often-severe musculoskeletal illness characterized by fever, joint pain, and a range of debilitating symptoms. The virus has re-emerged as a global health threat in recent decades, spreading from its origin in Africa across Asia and the Americas, leading to widespread ...
Wesley Freppel, Laurie A. Silva, Kenneth A. Stapleford, Lara J. Herrero   +3 more
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Virulence of bluetongue virus for British sheep

Research in Veterinary Science, 1987
A South African isolate of bluetongue virus type 3 was inoculated intradermally into three different breeds of British sheep under conditions designed to test its virulence in animals under stress. All animals inoculated developed a pyrexia and viraemia followed by clinical evidence of bluetongue disease.
M J, Jeggo, A H, Corteyn, W P, Taylor, W L, Davidson, B M, Gorman   +4 more
openaire   +3 more sources

Virulence of Japanese Encephalitis Virus Genotypes I and III, Taiwan

Emerging Infectious Diseases, 2017
The virulence of genotype I (GI) Japanese encephalitis virus (JEV) is under debate. We investigated differences in the virulence of GI and GIII JEV by calculating asymptomatic ratios based on serologic studies during GI- and GIII-JEV endemic periods. The
Yi-Chin Fan, Jen-Wei Lin, Shu-Ying Liao, Jo-Mei Chen, Yi-Ying Chen, Hsien-Chung Chiu, Chen-Chang Shih, Chi-Ming Chen, Ruey-Yi Chang, Chwan-Chuen King, Wei-June Chen, Yi-Ting Ko, Chao-Chin Chang, Shyan-Song Chiou   +13 more
doaj   +2 more sources

Pathogenicity and virulence of hepatitis A virus [PDF]

Virulence, 2021
Hepatitis A is an acute infection of the liver, which is mostly asymptomatic in children and increases the severity with age. Although in most patients the infection resolves completely, in a few of them it may follow a prolonged or relapsed course or even a fulminant form.
Pintó, Rosa, Perez Rodriguez, Francisco Javier, Costafreda, Maria-Isabel, Chavarria-Miró, Gemma, Guix, Susana, Ribes, Enric, Bosch, Albert   +6 more
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Pathogenicity and virulence of Hepatitis B virus [PDF]

Virulence, 2022
Hepatitis B virus (HBV) is a hepatotropic virus and an important human pathogen. There are an estimated 296 million people in the world that are chronically infected by this virus, and many of them will develop severe liver diseases including hepatitis, cirrhosis and hepatocellular carcinoma (HCC).
Yu-Chen Chuang, Kuen-Nan Tsai, Jing-Hsiung James Ou   +2 more
openaire   +3 more sources

Pathogenicity and virulence of Marburg virus

Virulence, 2022
Marburg virus (MARV) has been a major concern since 1967, with two major outbreaks occurring in 1998 and 2004. Infection from MARV results in severe hemorrhagic fever, causing organ dysfunction and death. Exposure to fruit bats in caves and mines, and human-to-human transmission had major roles in the amplification of MARV outbreaks in African ...
Mehedy Hasan Abir, Tanjilur Rahman, Ayan Das, Silvia Naznin Etu, Iqbal Hossain Nafiz, Ahmed Rakib, Saikat Mitra, Talha Bin Emran, Kuldeep Dhama, Ariful Islam, Abolghasem Siyadatpanah, Shafi Mahmud, Bonlgee Kim, Mohammad Mahmudul Hassan   +13 more
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THE EVOLUTION OF VIRULENCE IN A PLANT VIRUS [PDF]

Evolution, 2003
The evolution of virulence is a rapidly growing field of research, but few reports deal with the evolution of virulence in natural populations of parasites. We present here an observational and experimental analysis of the evolution of virulence of the plant virus Cucumber mosaic virus (CMV) during an epidemic on tomato in eastern Spain. Three types of
Fernando, Escriu, Aurora, Fraile, Fernando, García-Arenal   +2 more
openaire   +2 more sources

Deletion of the EP296R Gene from the Genome of Highly Virulent African Swine Fever Virus Georgia 2010 Does Not Affect Virus Replication or Virulence in Domestic Pigs

Viruses, 2022
African swine fever virus (ASFV) causes a lethal disease (ASF) in domestic pigs, African swine fever (ASF). ASF is currently producing a pandemic affecting pig production across Eurasia, leading to a shortage of food accessibility.
Elizabeth A. Vuono, Elizabeth Ramirez-Medina, Sarah Pruitt, Ayushi Rai, Nallely Espinoza, Edward Spinard, Alyssa Valladares, Ediane Silva, Lauro Velazquez-Salinas, Manuel V. Borca, Douglas P. Gladue   +10 more
doaj   +1 more source

Determinants of virulence of influenza A virus [PDF]

European Journal of Clinical Microbiology & Infectious Diseases, 2013
Influenza A viruses cause yearly seasonal epidemics and occasional global pandemics in humans. In the last century, four human influenza A virus pandemics have occurred. Occasionally, influenza A viruses that circulate in other species cross the species barrier and infect humans. Virus reassortment (i.e. mixing of gene segments of multiple viruses) and
Schrauwen, Eefje, de Graaf, Miranda, Herfst, Sander, Rimmelzwaan, Guus, Osterhaus, Ab, Fouchier, Ron   +5 more
openaire   +2 more sources

Evaluation in Swine of a Recombinant Georgia 2010 African Swine Fever Virus Lacking the I8L Gene

Viruses, 2020
African swine fever virus (ASFV) is the causative agent of African swine fever, a disease currently causing significant economic losses in Europe and Asia. Specifically, the highly virulent ASFV strain Georgia 2010 (ASFV-G) is producing disease outbreaks
Elizabeth Vuono, Elizabeth Ramirez-Medina, Sarah Pruitt, Ayushi Rai, Ediane Silva, Nallely Espinoza, James Zhu, Lauro Velazquez-Salinas, Douglas P. Gladue, Manuel V. Borca   +9 more
doaj   +1 more source