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Exploring optimal control strategies in a nonlinear fractional bi-susceptible model for Covid-19 dynamics using Atangana-Baleanu derivative.
Sci Rep
December 2024
Department of Mathematics, GC University, Lahore, Pakistan.
In this article, a nonlinear fractional bi-susceptible [Formula: see text] model is developed to mathematically study the deadly Coronavirus disease (Covid-19), employing the Atangana-Baleanu derivative in Caputo sense (ABC). A more profound comprehension of the system's intricate dynamics using fractional-order derivative is explored as the primary focus of constructing this model. The fundamental properties such as positivity and boundedness, of an epidemic model have been proven, ensuring that the model accurately reflects the realistic behavior of disease spread within a population.
View Article and Find Full Text PDFSystematic surveillance of SARS-CoV-2 reveals dynamics of variant mutagenesis and transmission in a large urban population.
Nat Commun
December 2024
Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada.
Highly mutable pathogens generate viral diversity that impacts virulence, transmissibility, treatment, and thwarts acquired immunity. We previously described C19-SPAR-Seq, a high-throughput, next-generation sequencing platform to detect SARS-CoV-2 that we here deployed to systematically profile variant dynamics of SARS-CoV-2 for over 3 years in a large, North American urban environment (Toronto, Canada). Sequencing of the ACE2 receptor binding motif and polybasic furin cleavage site of the Spike gene in over 70,000 patients revealed that population sweeps of canonical variants of concern (VOCs) occurred in repeating wavelets.
View Article and Find Full Text PDFProphylactic HPV vaccination in HPV-related gynecologic cancers: European Society of Gynecological Oncology (ESGO) prevention committee opinion.
Int J Gynaecol Obstet
December 2024
Department of Gynecology and Obstetrics, Comprehensive Cancer Center, Medical University of Vienna, Austria.
Many clinicians recommend that patients diagnosed with HPV-related gynecologic cancers receive prophylactic HPV vaccination at the time of cancer diagnosis or after cancer treatment. In view of the large use of such practice, we aimed to assess the literature evidence supporting the use of prophylactic HPV vaccines after diagnosis or treatment of HPV-related gynecologic cancers. Women who develop HPV-related cervical, vaginal, and vulvar cancers represent a subgroup of patients who may be particularly sensitive to HPV infection and re-acquire infections.
View Article and Find Full Text PDFImmune Priming Promotes Thermotolerance, Whereas Thermopriming Suppresses Systemic Acquired Resistance in Arabidopsis.
Plant Cell Environ
December 2024
School of Life Sciences, Jawaharlal Nehru University, New Delhi, Delhi, India.
Heat stress and pathogens are two serious yield-limiting factors of crop plants. Plants that previously experienced high but sub-lethal temperatures become subsequently tolerant to higher temperatures through the development of acquired thermotolerance (ATT). ATT activation is associated with the elevated expression of heat shock (HS)-related genes such as HSFA2, HSFA3, and HSP101.
View Article and Find Full Text PDFHigh Silent Prevalence of Zinc Deficiency and Impaired Immunity in Children Under Five Years of Age Admitted to a Regional Referral Hospital in Uganda.
Cureus
November 2024
Department of Biochemistry, Mbarara University of Science and Technology, Mbarara, UGA.
Introduction Zinc deficiency (ZnD) impairs the development of acquired immunity and contributes to growth failure in children under five years of age. However, the prevalence of ZnD and its association with immunity in this age group in Uganda have not been well explored. This study aimed to determine the prevalence of ZnD and explore the associations between low serum zinc levels and total white blood cell count, differential cell counts, and levels of IL-1 and IL-2 in children aged 12 to 59 months.
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