Group items tagged

A novel bioinformatics approach can predict vaccine effectiveness for the influenza season, and indicates that the current vaccines are likely to be effective against H3N2 flu viruses in the U.S. 2017/2018 flu season, according to research published online Nov. 29 in F1000 Research. Slobodan Paessler, D.V.M., Ph.D., from the University of Texas Medical Branch, and Veljko Veljkovic, Ph.D., from Biomed Protection, both in Galveston, Texas, used a bioinformatics platform to predict vaccine effectiveness for the 2017/2018 influenza season in the United States. The hemagglutinin HA1 region of 251 and 113 human H3N2 viruses collected in Australia and the United States from July to September 2017 were analyzed. The informational spectrum method-based phylogenetic analysis of H3N2 viruses was performed to serve as a base for predicting vaccine effectiveness. The researchers found that analyses of Australian viruses generated two clusters; the vaccine virus was placed in the smaller group. As a result, the vaccine was predicted not to be efficient against most Australian H3N2 viruses in the 2017 flu season; low vaccine effectiveness was reported in Australia in the 2017 flu season in accordance with this prediction. The U.S. H3N2 viruses were also grouped into two clusters, but the vaccine virus was placed in the largest cluster encompassing 71 percent of analyzed viruses. Consequently, the vaccine effectiveness is expected not to be suboptimal in the United States.

For patients with stage 4 or 5 chronic kidney disease and hepatitis C virus (HCV) infection, 12 weeks of treatment with glecaprevir and pibrentasvir results in a high rate of sustained virologic response, according to a study published online Oct. 11 in the New England Journal of Medicine. Edward Gane, M.D., from Auckland City Hospital in New Zealand, and colleagues conducted a multicenter trial to examine the efficacy and safety of combination treatment with the NS3/4A protease inhibitor glecaprevir and the NS5A inhibitor pibrentasvir for 12 weeks in adults with HCV infection and compensated liver disease with severe renal impairment, dependence on dialysis, or both. Participants had stage 4 or 5 chronic kidney disease. One hundred four patients were enrolled in the trial. The researchers found that the sustained virologic response rate was 98 percent. During treatment, none of the patients had virologic failure, and none had a virologic relapse after the end of treatment. Pruritus, fatigue, and nausea were reported in at least 10 percent of the patients. Twenty-four percent of the patients reported serious adverse events. Because of adverse events, four patients discontinued the trial treatment prematurely; three of these had sustained virologic response.