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Influenza01:27

Influenza

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Influenza is an acute, highly communicable viral disease that affects the respiratory tract and is responsible for seasonal epidemics worldwide. Influenza A is the most prevalent type associated with widespread outbreaks and is subtyped based on two surface glycoproteins: hemagglutinin (H) and neuraminidase (N), as in H1N1. These glycoproteins are essential for viral infectivity, transmission, and immune recognition. Transmission occurs primarily through respiratory droplets and contaminated...
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Infectious diseases appear in populations through various transmission patterns, influenced by pathogen characteristics, population immunity, environmental conditions, and social behavior. Understanding these patterns is essential for effective public health surveillance and intervention. These categories—sporadic, outbreak, epidemic, pandemic, and endemic—help frame the nature and scope of disease events.Sporadic diseases occur irregularly and infrequently, without a predictable...
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During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R...
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Nasal Wipes for Influenza A Virus Detection and Isolation from Swine
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Swine flu is back again: a review.

Kuldeep Dhama1, Amit Kumar Verma, S Rajagunalan

  • 1Division of Pathology, Indian Veterinary Research Institute, Izatnagar, Bareilly Utter Pradesh--243122, India.

Pakistan Journal of Biological Sciences : PJBS
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Emerging flu viruses, including avian and swine flu, pose a growing global health threat. This review covers swine flu characteristics, public health impacts, and advances in diagnosis, vaccines, and control measures.

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Area of Science:

  • Virology
  • Epidemiology
  • Public Health

Background:

  • Influenza viruses, primarily affecting humans, birds, and pigs, have gained global attention due to pandemic threats like Avian Flu and Swine Flu.
  • The continuous evolution and emergence of new flu virus strains present increasing dangers and challenges for researchers.
  • Pigs serve as a 'mixing bowl' for viral reassortment, complicating the epidemiological landscape of influenza.

Purpose of the Study:

  • To provide an overview of swine flu, including its causative virus and disease characteristics.
  • To highlight the public health consequences associated with swine flu outbreaks.
  • To review advancements in swine flu diagnosis, vaccine development, control strategies, and necessary precautionary measures.

Main Methods:

  • Literature review of existing research on influenza viruses, focusing on swine flu (H1N1).
  • Analysis of epidemiological data and public health impacts of recent flu pandemics.
  • Synthesis of information on diagnostic techniques, vaccine efficacy, and control measures.

Main Results:

  • Swine flu, particularly the H1N1 subtype, caused a global pandemic with significant morbidity and mortality.
  • Novel and emerging flu viruses demonstrate rapid evolution, necessitating continuous research and development.
  • Effective diagnosis, vaccination, and control strategies are crucial for managing influenza outbreaks.

Conclusions:

  • Influenza viruses represent a dynamic and evolving threat to global public health.
  • Ongoing research is vital for developing effective countermeasures against emerging flu strains.
  • Preparedness through vaccination, diagnostics, and public health interventions is essential to mitigate the impact of future influenza pandemics.