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http://dx.doi.org/10.1016/0022-4804(73)90148-0 | DOI Listing |
Vaccines (Basel)
November 2024
FSBSI 'Institute of Experimental Medicine', 197022 Saint Petersburg, Russia.
Background/objectives: Humoral immunity directed against neuraminidase (NA) of the influenza virus may soften the severity of infection caused by new antigenic variants of the influenza viruses. Evaluation of NA-inhibiting (NI) antibodies in combination with antibodies to hemagglutinin (HA) may enhance research on the antibody response to influenza vaccines.
Methods: The study examined 64 pairs of serum samples from patients vaccinated with seasonal inactivated trivalent influenza vaccines (IIVs) in 2018 according to the formula recommended by the World Health Organization (WHO) for the 2018-2019 flu season.
Arch Virol
January 2025
Department Experimental and Clinical Medicine, University of Florence, Florence, Italy.
The I38T substitution in the influenza virus polymerase-acidic (PA) subunit is a resistance marker of concern for treatment with the antiviral baloxavir marboxil (BXM). Thus, monitoring PA/I38T mutations is of clinical importance. Here, we developed three rapid and sensitive assays for the detection and monitoring of the PA/I38T mutation.
View Article and Find Full Text PDFPLoS Negl Trop Dis
January 2025
Malaria Research and Training Center (MRTC), Université des Sciences, des Techniques et des Technologies de Bamako (USTTB), Bamako, Mali.
Plasmodium malariae is the third most prevalent human malaria parasite species and contributes significantly to morbidity. Nevertheless, our comprehension of this parasite's biology remains limited, primarily due to its frequent co-infections with other species and the lack of a continuous in vitro culture system. To effectively combat and eliminate this overlooked parasite, it is imperative to acquire a better understanding of this species.
View Article and Find Full Text PDFJ Infect Chemother
December 2024
Japan Physicians Association, Tokyo, Japan; Ricerca Clinica Co., Fukuoka, Japan.
Introduction: To assess the susceptibility of epidemic influenza viruses to the four most used neuraminidase inhibitors (NAIs) during the 2023-24 influenza season in Japan, we measured the 50% inhibitory concentration (IC) of oseltamivir, peramivir, zanamivir, and laninamivir in virus isolates from the sample of 100 patients.
Methods: Viral isolation was done using specimens obtained before and after treatment, with the type/subtype determined by RT-PCR using type- and subtype-specific primers. IC values were determined by a neuraminidase inhibition assay using a fluorescent substrate.
Vet Sci
November 2024
Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou 225012, China.
Pigeon Newcastle disease (ND) is the most common viral infectious disease in the pigeon industry, caused by pigeon paramyxovirus type 1 (PPMV-1), a variant of chicken-origin Newcastle disease virus (NDV). Previous studies have identified significant amino acid differences between PPMV-1 and chicken-origin NDV at positions 347 and 349 in the hemagglutinin-neuraminidase (HN) protein, with PPMV-1 predominantly exhibiting glycine (G) at position 347 and glutamic acid (E) at position 349, while most chicken-origin NDVs show E at position 347 and aspartic acid (D) at position 349. However, the impact of these amino acid substitutions remains unclear.
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