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Adults don't need tetanus, diphtheria boosters if fully vaccinated as children, study says

A recent study published in Clinical Infectious Diseases found that adults who completed their childhood vaccination series against tetanus and diphtheria are protected for life. The researchers compared data from millions of people across North America and Europe between 2001 and 2016, concluding that booster shots are not necessary.

SourceOregon Health & Science University·JournalClinical Infectious Diseases·DateFeb 25, 2020

Single HPV vaccine dose may be effective against cervical cancer

A single dose of the human papillomavirus (HPV) vaccine is as effective as multiple doses for preventing preinvasive cervical disease, which can later develop into cervical cancer. The risk of preinvasive cervical disease was lower in adolescents who received one, two, or three doses of the HPV vaccine compared to unvaccinated teens.

SourceWiley·JournalCancer·DateFeb 10, 2020

Hepatitis B: New therapeutic approach may help to cure chronic hepatitis B infection

Researchers at Helmholtz Zentrum München developed a novel therapeutic approach to cure chronic hepatitis B infection. By knocking down the expression of the virus' proteins, they enabled successful vaccination with TherVacB, a novel therapeutic vaccine. The therapy aims to cure existing chronic diseases by activating immune cells.

Doubts raised about effectiveness of HPV vaccines

A new analysis of HPV vaccine clinical trials raises doubts about their effectiveness, citing methodological problems and limited trial populations. The study found that the trials were not designed to detect cervical cancer, which takes decades to develop, and that vaccination may only prevent low-grade abnormal cell changes.

SourceSAGE·JournalJournal of the Royal Society of Medicine·DateJan 21, 2020

Do studies underestimate the prevalence of typhoid?

A study published in PLOS Neglected Tropical Diseases found that typhoid prevalence is likely higher than estimated due to missed blood cultures, with patients more likely to have cultures if older, feverish or suspected urinary tract infection.

SourcePLOS·JournalPLOS Neglected Tropical Diseases·DateJan 16, 2020

PREVAC-UP: The Partnership for Research on Ebola Vaccination extends follow-up

The Partnership for Research on Ebola Vaccination (PREVAC) has received additional funding to evaluate three Ebola vaccine regimens for long-term safety and durability. The PREVAC-UP project will assess these factors over 5 years after vaccination, as well as the impact of co-infections like malaria and helminths on immune responses.

From the mouths of babes: Lessons in humility

A pediatrician at Children's National Hospital wrote a 27-line poem inspired by her young patients' comments about vaccines. The poem, part of the 'Poetry and Medicine' series, aims to capture the optimism and resilience of children despite challenges. Dr. Sims hopes the poem will help build self-efficacy and resiliency in her patients.

Why isn't there a vaccine for staph?

Researchers at Washington University School of Medicine found that T cells play a critical role in protecting against staph infections. The study suggests activating untapped immune cells and immunizing infants before birth to block toxin effects. This new approach shows promise for developing an effective staph vaccine.

SourceWashington University in St. Louis·JournalJournal of Clinical Investigation·DateDec 24, 2019

Virus multiplication in 3D

Researchers have successfully determined the three-dimensional structure of a vaccinia virus RNA polymerase at atomic resolution, providing key findings on virus multiplication. The complex is composed of various subunits and relies on host tRNA molecules to function, enabling an essential step in the pathogen's life cycle.

SourceUniversity of Würzburg·JournalCell·DateDec 12, 2019

Breakthrough in Zika virus vaccine

Researchers at the University of Adelaide have made significant progress in developing a novel Zika virus vaccine that prevents infection in pre-clinical models. The vaccine's effectiveness has been demonstrated in mouse models, offering a promising solution to prevent congenital effects in infants born to infected mothers.

SourceUniversity of Adelaide·JournalScience Advances·DateDec 12, 2019

New insect virus provides a safer platform for flavivirus vaccines and tests

A new species of insect virus, Binjari virus, has been identified that can be engineered to house genes from disease-causing flaviviruses. This non-infectious virus represents a flexible tool for testing diagnostics and vaccines for various infectious diseases, including yellow fever, dengue, and West Nile encephalitis.

SourceAmerican Association for the Advancement of Science (AAAS)·JournalScience Translational Medicine·DateDec 11, 2019