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https://www.readbyqxmd.com/read/28437183/first-two-imported-cases-of-zika-virus-infections-in-romania
#1
Simin Aysel Florescu, Ani Ioana Cotar, Corneliu Petru Popescu, Cornelia Svetlana Ceianu, Mihaela Zaharia, Geta Vancea, Daniel Codreanu, Daniela Badescu, Emanoil Ceausu
We report the first two cases of imported Zika virus (ZIKV) infection in Romanian patients returning from areas with ongoing outbreaks and challenges for laboratory diagnostic; first one with a classical pattern of acute flaviviral infection and the second one with an interesting pattern of a secondary flaviviral (ZIKV) infection in a yellow fever-vaccinated child living abroad in an endemic area.
May 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28434128/aspects-on-the-history-of-transmission-and-favor-of-distribution-of-viruses-by-iatrogenic-action-perhaps-an-example-of-a-paradigm-of-the-worldwide-spread-of-hiv
#2
REVIEW
Lutz G Gürtler, Josef Eberle
Transmission of infectious agents might be associated with iatrogenic actions of charitable help in health care. An example is the vaccination against yellow fever in USA that transmitted hepatitis B virus. Another example is injections of praziquantel for treatment and cure of schistosomiasis in Central and Northern Africa, with a focus in Egypt that has spread hepatitis C virus. There is no indication that human T-lymphotropic virus type 1 was spread by injection treatment for African trypanosomiasis, syphilis and treponematosis, but these treatments might have contributed to the early spread of human immunodeficiency virus type 1 (HIV-1) in Central Africa...
April 22, 2017: Medical Microbiology and Immunology
https://www.readbyqxmd.com/read/28429035/max-theiler-1899-1972-creator-of-the-yellow-fever-vaccine
#3
Siang Yong Tan, Kate Pettigrew
No abstract text is available yet for this article.
April 2017: Singapore Medical Journal
https://www.readbyqxmd.com/read/28426111/importation-of-yellow-fever-into-china-assessing-travel-patterns
#4
Annelies Wilder-Smith, W Y Leong
Rapid increase in trade and a growing air passenger market encourages high travel volume between the regions associated with increasing risks of such importations including China. Eleven Chinese workers infected during the 2016 yellow fever (YF) outbreak in Angola imported YF into China highlighting the potential for spread into Asia. Using outbound and inbound travel data, we assessed travel patterns from and to YF endemic countries in relation to China. Among YF endemic countries, Angola has the second highest number of travellers into China and also receives the second highest number of Chinese visitors...
July 1, 2017: Journal of Travel Medicine
https://www.readbyqxmd.com/read/28424031/yellow-fever-from-angola-and-congo-a-storm-gathers
#5
Qanta A Ahmed, Ziad A Memish
In common with Zika, Chikungunya and Dengue, Yellow Fever (YF) is an arthropod-borne flavivirus. It is transmitted between humans and from monkeys by mosquitoes of the Aedes aegypti (its principal vector), haemogogus and albopictus varieties. Three cycles of transmission may occur: urban; sylvatic; and intermediate. Recently, sub-Saharan Africa has seen the resurgence of this neglected disease. The current YF outbreak in Angola began in December 2015 in the capital Luanda and by October 2016 there had been > 4300 suspected cases, with 376 deaths (case fatality rate = 8...
April 2017: Tropical Doctor
https://www.readbyqxmd.com/read/28422752/t-bet-b-cells-are-induced-by-human-viral-infections-and-dominate-the-hiv-gp140-response
#6
James J Knox, Marcus Buggert, Lela Kardava, Kelly E Seaton, Michael A Eller, David H Canaday, Merlin L Robb, Mario A Ostrowski, Steven G Deeks, Mark K Slifka, Georgia D Tomaras, Susan Moir, M Anthony Moody, Michael R Betts
Humoral immunity is critical for viral control, but the identity and mechanisms regulating human antiviral B cells are unclear. Here, we characterized human B cells expressing T-bet and analyzed their dynamics during viral infections. T-bet+ B cells demonstrated an activated phenotype, a distinct transcriptional profile, and were enriched for expression of the antiviral immunoglobulin isotypes IgG1 and IgG3. T-bet+ B cells expanded following yellow fever virus and vaccinia virus vaccinations and also during early acute HIV infection...
April 20, 2017: JCI Insight
https://www.readbyqxmd.com/read/28398253/t-cell-mediated-immunity-towards-yellow-fever-virus-and-useful-animal-models
#7
REVIEW
Alan M Watson, William B Klimstra
The 17D line of yellow fever virus vaccines is among the most effective vaccines ever created. The humoral and cellular immunity elicited by 17D has been well characterized in humans. Neutralizing antibodies have long been known to provide protection against challenge with a wild-type virus. However, a well characterized T cell immune response that is robust, long-lived and polyfunctional is also elicited by 17D. It remains unclear whether this arm of immunity is protective following challenge with a wild-type virus...
April 11, 2017: Viruses
https://www.readbyqxmd.com/read/28386132/adaptive-immune-responses-to-booster-vaccination-against-yellow-fever-virus-are-much-reduced-compared-to-those-after-primary-vaccination
#8
Michael Kongsgaard, Maria R Bassi, Michael Rasmussen, Karsten Skjødt, Søren Thybo, Mette Gabriel, Morten Bagge Hansen, Jan Pravsgaard Christensen, Allan Randrup Thomsen, Soren Buus, Anette Stryhn
Outbreaks of Yellow Fever occur regularly in endemic areas of Africa and South America frequently leading to mass vaccination campaigns straining the availability of the attenuated Yellow Fever vaccine, YF-17D. The WHO has recently decided to discontinue regular booster-vaccinations since a single vaccination is deemed to confer life-long immune protection. Here, we have examined humoral (neutralizing antibody) and cellular (CD8 and CD4 T cell) immune responses in primary and booster vaccinees (the latter spanning 8 to 36 years after primary vaccination)...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28380113/prevalence-and-titers-of-yellow-fever-virus-neutralizing-antibodies-in-previously-vaccinated-adults
#9
Karina Takesaki Miyaji, Vivian Iida Avelino-Silva, Marisol Simões, Marcos da Silva Freire, Carlos Roberto de Medeiros, Patrícia Emilia Braga, Maria Angélica Acalá Neves, Marta Heloisa Lopes, Esper Georges Kallas, Ana Marli Christovam Sartori
Introduction: The World Health Organization (WHO) recommends one single dose of the Yellow Fever (YF) vaccine based on studies of antibody persistency in healthy adults. We assessed the prevalence and titers of YF virus neutralizing antibodies in previously vaccinated persons aged  60 years, in comparison to younger adults. We also evaluated the correlation between antibody titers and the time since vaccination among participants who received one vaccine dose, and the seropositivity among participants vaccinated prior to or within the past 10 years...
April 3, 2017: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/28366605/yellow-fever-live-attenuated-vaccine-a-very-successful-live-attenuated-vaccine-but-still-we-have-problems-controlling-the-disease
#10
REVIEW
Alan D T Barrett
Yellow fever (YF) is regarded as the original hemorrhagic fever and has been a major public health problem for at least 250years. A very effective live attenuated vaccine, strain 17D, was developed in the 1930s and this has proved critical in the control of the disease. There is little doubt that without the vaccine, YF virus would be considered a biosafety level 4 pathogen. Significantly, YF is currently the only disease where an international vaccination certificate is required under the International Health Regulations...
March 30, 2017: Vaccine
https://www.readbyqxmd.com/read/28358796/yellow-fever-outbreak-kongo-central-province-democratic-republic-of-the-congo-august-2016
#11
John O Otshudiema, Nestor G Ndakala, Elande-Taty K Mawanda, Gaston P Tshapenda, Jacques M Kimfuta, Loupy-Régence N Nsibu, Abdou S Gueye, Jacob Dee, Rossanne M Philen, Coralie Giese, Christopher S Murrill, Ray R Arthur, Benoit I Kebela
On April 23, 2016, the Democratic Republic of the Congo's (DRC's) Ministry of Health declared a yellow fever outbreak. As of May 24, 2016, approximately 90% of suspected yellow fever cases (n = 459) and deaths (45) were reported in a single province, Kongo Central Province, that borders Angola, where a large yellow fever outbreak had begun in December 2015. Two yellow fever mass vaccination campaigns were conducted in Kongo Central Province during May 25-June 7, 2016 and August 17-28, 2016. In June 2016, the DRC Ministry of Health requested assistance from CDC to control the outbreak...
March 31, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28333617/yellow-fever-in-a-traveller-returning-from-suriname-to-the-netherlands-march-2017
#12
Marjan Wouthuyzen-Bakker, Marjolein Knoester, Aad P van den Berg, Corine H GeurtsvanKessel, Marion Pg Koopmans, Coretta Van Leer-Buter, Bob Oude Velthuis, Suzan D Pas, Wilhelmina Lm Ruijs, Jonas Schmidt-Chanasit, Stephen Gs Vreden, Tjip S van der Werf, Chantal Bem Reusken, Wouter Fw Bierman
A Dutch traveller returning from Suriname in early March 2017, presented with fever and severe acute liver injury. Yellow fever was diagnosed by (q)RT-PCR and sequencing. During hospital stay, the patient's condition deteriorated and she developed hepatic encephalopathy requiring transfer to the intensive care. Although yellow fever has not been reported in the last four decades in Suriname, vaccination is recommended by the World Health Organization for visitors to this country.
March 16, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28301446/notes-from-the-field-investigation-of-patients-testing-positive-for-yellow-fever-viral-rna-after-vaccination-during-a-mass-yellow-fever-vaccination-campaign-angola-2016
#13
Andrew T Boyd, Diambi Dombaxe, Rosa Moreira, M S Oliveira, Eusebio Manuel, Carlos Navarro Colorado, Tatiana M Lanzieri
No abstract text is available yet for this article.
March 17, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28301394/effects-on-the-anti-abo-titers-of-military-blood-donors-from-a-predeployment-vaccination-program
#14
Olle Berséus
BACKGROUND: The use of blood group O as "universal blood" for emergency whole blood transfusions carries the risk for a hemolytic transfusion reaction mediated by incompatible A-/B-antibodies. This risk can be minimized by assuring that the donor has a low titer of anti-A and anti-B. The level of these naturally occurring antibodies have been shown to be increased by vaccination with most biologically derived vaccines. This boostering effect has been investigated for the new generation of vaccines...
March 15, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28301270/japanese-encephalitis-vaccines-immunogenicity-protective-efficacy-effectiveness-and-impact-on-the-burden-of-disease
#15
Nagendra R Hegde, Milind M Gore
Japanese encephalitis (JE) is a serious public health concern in most of Asia. The disease is caused by JE virus (JEV), a flavivirus transmitted by Culex mosquitoes. Several vaccines have been developed to control JE in endemic areas as well as to protect travelers and military personnel who visit or are commissioned from non-endemic to endemic areas. The vaccines include inactivated vaccines produced in mouse brain or cell cultures, live attenuated vaccines, and a chimeric vaccine based on the live attenuated yellow fever virus 17D vaccine strain...
February 22, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28281864/vaccines-licensed-and-in-clinical-trials-for-the-prevention-of-dengue
#16
J Torresi, G Ebert, M Pellegrini
Dengue has become a major global public health threat with almost half of the world's population living in at-risk areas. Vaccination would likely represent an effective strategy for the management of dengue disease in endemic regions, however to date there is only one licensed preventative vaccine for dengue infection. The development of a vaccine against dengue virus (DENV) has been hampered by an incomplete understanding of protective immune responses against DENV. The most clinically advanced dengue vaccine is the chimeric yellow fever-dengue vaccine (CYD) that employs the yellow fever virus 17D strain as the replication backbone (Chimerivax-DEN; CYD-TDV)...
February 14, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28275932/live-attenuated-yellow-fever-17d-vaccine-a-legacy-vaccine-still-controlling-outbreaks-in-modern-day
#17
REVIEW
Natalie D Collins, Alan D T Barrett
PURPOSE OF REVIEW: Live attenuated 17D vaccine is considered one of the safest and efficacious vaccines developed to date. This review highlights what is known and the gaps in knowledge of vaccine-induced protective immunity. RECENT FINDINGS: Recently, the World Health Organization modifying its guidance from 10-year booster doses to one dose gives lifelong protection in most populations. Nonetheless, there are some data suggesting immunity, though protective, may wane over time in certain populations and more research is needed to address this question...
March 2017: Current Infectious Disease Reports
https://www.readbyqxmd.com/read/28271980/mosquito-borne-diseases-and-omics-salivary-gland-proteome-of-the-female-aedes-aegypti-mosquito
#18
Rakhi Dhawan, Manish Kumar, Ajeet Kumar Mohanty, Gourav Dey, Jayshree Advani, T S Keshava Prasad, Ashwani Kumar
The female Aedes aegypti mosquito is an important vector for several tropical and subtropical diseases such as dengue, chikungunya, and Zika and yellow fever. The disease viruses infect the mosquito and subsequently spread to the salivary glands after which the viruses can be transmitted to humans with probing or feeding by the mosquito. Omics systems sciences offer the opportunity to characterize vectors and can inform disease surveillance, vector control and development of innovative diagnostics, personalized medicines, vaccines, and insecticide targets...
January 2017: Omics: a Journal of Integrative Biology
https://www.readbyqxmd.com/read/28254833/yellow-fever-vaccine-associated-neurological-disease-a-suspicious-case
#19
Pedro Beirão, Patrícia Pereira, Andreia Nunes, Pedro Antunes
A 70-year-old man with known cardiovascular risk factors, presented with acute onset expression aphasia, agraphia, dyscalculia, right-left disorientation and finger agnosia, without fever or meningeal signs. Stroke was thought to be the cause, but cerebrovascular disease investigation was negative. Interviewing the family revealed he had undergone yellow fever vaccination 18 days before. Lumbar puncture revealed mild protein elevation. Cultural examinations, Coxiella burnetti, and neurotropic virus serologies were negative...
March 2, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28243937/zika-virus-an-emerging-flavivirus
#20
REVIEW
Sang-Im Yun, Young-Min Lee
Zika virus (ZIKV) is a previously little-known flavivirus closely related to Japanese encephalitis, West Nile, dengue, and yellow fever viruses, all of which are primarily transmitted by blood-sucking mosquitoes. Since its discovery in Uganda in 1947, ZIKV has continued to expand its geographic range, from equatorial Africa and Asia to the Pacific Islands, then further afield to South and Central America and the Caribbean. Currently, ZIKV is actively circulating not only in much of Latin America and its neighbors but also in parts of the Pacific Islands and Southeast Asia...
March 2017: Journal of Microbiology / the Microbiological Society of Korea
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