A comparative study of the immunizing activity of strain variants derived from one epidemic influenza virus A/USSR/77 (H1N1) by using different attenuation methods was carried out. Serial passages in chick embryos preserved the biological activity of the virus better than genetic recombination which was manifested by a significant superiority of the passaged virus over the reassortant in the capacity of replicating in the upper respiratory tracts of the vaccinees, of inducing immune responses and creating the protection of the portals of entry of infection. The problem of optimal preservation of biological potentials of influenza virus in the process of attenuation is discussed.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Study of Children Aged Under 2 Years Admitted With RSV at Four Australian Hospitals [2021-2022].
J Paediatr Child Health
January 2025
WHO Collaborating Centre for Reference and Research on Influenza, VIDRL, Doherty Institute, Melbourne, Victoria, Australia.
Aims: Primary aim was to review severe acute respiratory infections (SARI) hospitalisations caused by respiratory syncytial virus (RSV) in children aged < 2 years in paediatric hospitals in Australia. Secondary aims included RSV subtyping, assessing RSV seasonality and contributing to the World Health Organisation's RSV surveillance programme.
Methods: We prospectively reviewed the medical records of children (< 2 years of age) with a confirmed SARI who were admitted to one of four major Australian paediatric hospitals and had a respiratory sample analysed by Polymerase Chain Reaction (PCR).
[Interpretation of "Expert recommendations for the prevention of common respiratory viral infections in neonates": problems faced by respiratory syncytial virus infection in neonates].
Zhongguo Dang Dai Er Ke Za Zhi
January 2025
Department of Neonatology, Children's Hospital of Chongqing Medical University/National Clinical Research Center for Child Health and Disorders/Ministry of Education Key Laboratory of Child Development and Disorders/Chongqing Key Laboratory of Child Rare Diseases in Infection and Immunity, Chongqing 400014, China.
Neonates are susceptible to respiratory viral infections, with outbreaks reported in areas with a high population of neonates, such as postpartum care centers and neonatal wards. While specific antiviral drugs are currently available for influenza, symptomatic supportive treatment remains the primary approach for respiratory syncytial virus (RSV), making prevention particularly important. The article closely follows the "Expert recommendations for the prevention of common respiratory viral infections in neonates" and provides an in-depth interpretation of recent breakthroughs in RSV prevention.
View Article and Find Full Text PDFContinuous Production of Influenza VLPs Using IC-BEVS and Multi-Stage Bioreactors.
Biotechnol Bioeng
January 2025
Instituto de Biologia Experimental e Tecnológica (iBET), Oeiras, Portugal.
The insect cell-baculovirus expression vector system (IC-BEVS) has been an asset to produce biologics for over 30 years. With the current trend in biotechnology shifting toward process intensification and integration, developing intensified processes such as continuous production is crucial to hold this platform as a suitable alternative to others. However, the implementation of continuous production has been hindered by the lytic nature of this expression system and the process-detrimental virus passage effect.
View Article and Find Full Text PDFEvaluation of preventive medicine amongst people living with human immunodeficiency virus attending a hospital-based care setting.
Intern Med J
January 2025
Department of Infectious Diseases, Westmead Hospital, Sydney, New South Wales, Australia.
Background: With improved outcomes in human immunodeficiency virus (HIV) due to the use of anti-retroviral therapy, ensuring adequate preventative healthcare and management of HIV-related comorbidities is essential.
Aims: To evaluate adherence with recommended guidelines for comorbidity and immunisation status screening amongst people living with HIV within a hospital-based setting across two timepoints.
Methods: A single-centre retrospective case series was conducted at a hospital between 2011 and 2021.
Risk factors for re-hospitalization within 90 days of discharge for severe influenza in children.
BMC Infect Dis
January 2025
Institute of Pediatric Research, Children's Hospital of Hebei Province, 133 Jianhua South Street, Shijiazhuang, 050031, Hebei Province, China.
Background: Influenza virus is a contagious respiratory pathogen that can cause severe acute infections with long-term adverse outcomes. For paediatric patients at high risk of severe influenza, the readmission and the associated risk factors remain unclear.
Methods: Children discharged with a diagnosis of severe or critical influenza from October 2021 to March 2022 were included.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!