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Influenza

Influenza

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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The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
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Pneumonia V: Nursing management and Prevention

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Nursing management of pneumonia involves promoting airway patency, facilitating rest and conserving energy, encouraging fluid intake, maintaining nutrition, and educating patients.
The nurse must practice strict medical asepsis and adhere to infection control guidelines to minimize healthcare-associated infections.
Enhance airway patency
Position the patient correctly to facilitate drainage of the affected lung segments. Manual or mechanical percussion and vibration can also be employed.

Respiratory Syncytial Virus Disease

Respiratory Syncytial Virus Disease

Human respiratory syncytial virus (RSV) is a widespread pathogen that primarily targets infants and young children but also poses a serious health risk to elderly and immunocompromised individuals. Belonging to the Pneumoviridae family, RSV is a negative-sense, single-stranded RNA virus within the Pneumovirus genus. Its global health burden is significant, with millions of cases annually resulting in hospitalizations and mortality, particularly in resource-limited settings. Although most...

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Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...

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Related Experiment Video

Updated: Jun 21, 2026

An Optimized Hemagglutination Inhibition (HI) Assay to Quantify Influenza-specific Antibody Titers

An Optimized Hemagglutination Inhibition (HI) Assay to Quantify Influenza-specific Antibody Titers

Published on: December 1, 2017

Influenza immunization in pregnancy.

Noni E MacDonald¹, Laura E Riley, M C Steinhoff

¹From the Division Pediatric Infectious Diseases, Dalhousie University, IWK Health Center, Halifax, Nova Scotia, Canada; Department of Obstetrics and Gynecology, Massachusetts General Hospital, Boston, Massachusetts; and Children's Global Health Center, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.

Obstetrics and Gynecology

|July 23, 2009

Summary

This summary is machine-generated.

Vaccinating pregnant women against influenza significantly protects both mothers and infants from illness. This safe and cost-effective intervention reduces influenza-like illness by over 30% and laboratory-proven infections in infants by 63%.

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Area of Science:

Public Health
Vaccinology
Maternal and Child Health

Background:

Influenza poses serious risks to pregnant women and infants (0-6 months).
Despite availability since the 1960s, only 15% of pregnant women receive the influenza vaccine.
Influenza immunization is a critical preventive measure for this vulnerable population.

Purpose of the Study:

To evaluate the effectiveness of influenza vaccination in pregnant women.
To assess the impact of maternal influenza immunization on infant health outcomes.
To highlight the benefits of influenza vaccination for maternal and child health.

Main Methods:

A randomized, controlled trial was conducted.
Pregnant women were immunized with an inactivated influenza vaccine.
Outcomes measured included influenza-like illness and laboratory-proven influenza infections in mothers and infants.

Main Results:

Influenza immunization of pregnant women reduced influenza-like illness by over 30% in both mothers and infants.
A 63% reduction in laboratory-proven influenza infections was observed in 0- to 6-month-old infants.
The intervention demonstrated significant protective effects for both maternal and infant health.

Conclusions:

Influenza vaccination during pregnancy is an effective strategy to protect both mothers and infants.
Healthcare providers should promote influenza immunization for pregnant women.
The vaccine represents a cost-saving intervention against serious influenza complications.