yellow fever vaccination
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Vaccine ◽  
2021 ◽  
Author(s):  
Laise Rodrigues Reis ◽  
Ismael Artur da Costa-Rocha ◽  
Ana Carolina Campi-Azevedo ◽  
Vanessa Peruhype-Magalhães ◽  
Jordana Grazziela Coelho-dos-Reis ◽  
...  

Vaccine X ◽  
2021 ◽  
pp. 100131
Author(s):  
Nádia Emi Aikawa ◽  
Verena Andrade Balbi ◽  
Eduardo F. Borba ◽  
Adriana Coracini Tonacio ◽  
Adriana Maluf Elias Sallum ◽  
...  

Author(s):  
Betina Soares dos Reis ◽  
Felipe Cintra Staub ◽  
Andrea Koishi ◽  
Camila Zanluca ◽  
Claudia Nunes Duarte dos Santos ◽  
...  

PLoS ONE ◽  
2021 ◽  
Vol 16 (10) ◽  
pp. e0258357
Author(s):  
Kei Yamamoto ◽  
Michiyo Suzuki ◽  
Mugen Ujiie ◽  
Shuzo Kanagawa ◽  
Norio Ohmagari

Rubella and measles outbreaks in adults occur because of unimmunized or partially immunized status. Travel clinics play an important role in catch-up measles, rubella, mumps, and varicella immunization for adults. We evaluated the need for catch-up measles, rubella, mumps, and varicella immunization by young adults at our travel clinic. This retrospective observational study was conducted at the National Center for Global Health and Medicine from June 1, 2017 to May 31, 2018. Adults aged 16–49 years who received pre-travel consultation and had childhood immunization records were included. Individuals who fully or partially received planned measles, rubella, mumps, and varicella catch-up immunization were classified as “immunized.” We calculated the proportion of “immunized” individuals and analyzed the factors associated with catch-up measles, rubella, mumps, and varicella immunization at pre-travel consultation using logistic regression analysis. Overall, 3,456 individuals received pre-travel consultations during the study period; 827 (336 men, median age 22 years) had childhood immunization records. The most common trip purposes were study (33%) and tourism (24%). The most common destination was Asia (39%). Catch-up immunization of any measles, rubella, mumps, and varicella vaccine was needed by 755 individuals. After consultation, 20–46% of these participants who needed catchup immunization received at least one dose of immunization. Factors that are negatively associated with measles, rubella, mumps, and varicella catch-up immunization were tourism (odds ratio 0.37 to 0.58), yellow fever vaccination (0.45 to 0.50) (excluding varicella), and each disease history (0.13 to 0.40) (excluding rubella and varicella). Further studies are needed to identify barriers to catch-up immunization.


Author(s):  
Mariângela Ottoboni Brunaldi ◽  
René Julias Costa Silva ◽  
Alexandre Todorovic Fabro ◽  
Daniel Cardoso de Almeida e Araujo ◽  
Anibal Basile-Filho ◽  
...  

Yellow fever is a viral hemorrhagic disease, and vaccination is the most effective way to minimize the impact of the disease. Serious adverse events after yellow fever vaccination are rare. We report the case of a young woman with an unusual presentation of yellow fever 17DD vaccine-associated acute viscerotropic disease, with severe hepatic impairment following a long incubation period. She died more than a month after yellow fever vaccination.


eLife ◽  
2021 ◽  
Vol 10 ◽  
Author(s):  
Katy A M Gaythorpe ◽  
Kaja Abbas ◽  
John Huber ◽  
Andromachi Karachaliou ◽  
Niket Thakkar ◽  
...  

Background: Childhood immunisation services have been disrupted by COVID-19. WHO recommends considering outbreak risk using epidemiological criteria when deciding whether to conduct preventive vaccination campaigns during the pandemic. Methods: We used 2-3 models per infection to estimate the health impact of 50% reduced routine vaccination coverage and delaying campaign vaccination for measles, meningococcal A and yellow fever vaccination in 3-6 high burden countries per infection. Results: Reduced routine coverage in 2020 without catch-up vaccination may increase measles and yellow fever disease burden in the modelled countries. Delaying planned campaigns may lead to measles outbreaks and increases in yellow fever burden in some countries. For meningococcal A vaccination, short term disruptions in 2020 are unlikely to have a significant impact. Conclusion: The impact of COVID-19-related disruption to vaccination programs varies between infections and countries. Funding: Bill and Melinda Gates Foundation and Gavi, the Vaccine Alliance.


Vaccines ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 671
Author(s):  
Jolynne Mokaya ◽  
Derick Kimathi ◽  
Teresa Lambe ◽  
George M. Warimwe

Yellow fever (YF) remains a threat to global health, with an increasing number of major outbreaks in the tropical areas of the world over the recent past. In light of this, the Eliminate Yellow Fever Epidemics Strategy was established with the aim of protecting one billion people at risk of YF through vaccination by the year 2026. The current YF vaccine gives excellent protection, but its use is limited by shortages in supply due to the difficulties in producing the vaccine. There are good grounds for believing that alternative fractional dosing regimens can produce strong protection and overcome the problem of supply shortages as less vaccine is required per person. However, immune responses to these vaccination approaches are yet to be fully understood. In addition, published data on immune responses following YF vaccination have mostly quantified neutralising antibody titers. However, vaccine-induced antibodies can confer immunity through other antibody effector functions beyond neutralisation, and an effective vaccine is also likely to induce strong and persistent memory T cell responses. This review highlights the gaps in knowledge in the characterisation of YF vaccine-induced protective immunity in the absence or presence of neutralising antibodies. The assessment of biophysical antibody characteristics and cell-mediated immunity following YF vaccination could help provide a comprehensive landscape of YF vaccine-induced immunity and a better understanding of correlates of protective immunity.


2021 ◽  
Vol 27 (6) ◽  
Author(s):  
Ana Freitas Ribeiro ◽  
Bruno Fukelmann Guedes ◽  
Jamal M.A.H. Sulleiman ◽  
Francisco Tomaz Meneses de Oliveira ◽  
Izabel Oliva Marcilio de Souza ◽  
...  

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