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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...

Pneumonia I: Introduction

Pneumonia I: Introduction

Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...

Pneumonia I: Introduction

Pneumonia I: Introduction

Pneumonia is an infection of the lower respiratory tract that leads to inflammation of the lung parenchyma, often resulting in the accumulation of inflammatory exudate in the alveoli and airways. Unlike the watery, low-protein fluid exudate in pulmonary edema, the exudate in this case is a thick fluid rich in immune cells, proteins, and debris produced during infection and inflammation.This impairs gas exchange and can lead to consolidation of lung tissue. The infection may be caused by a...

Vaccinations

Vaccinations

Healthcare Associated Infections II: Preventive Measures

Healthcare Associated Infections II: Preventive Measures

Essential infection prevention measures are based on the knowledge of the infection chain, the modes of transmission in healthcare settings, and the use of the best practices in all healthcare settings. Compulsory public reporting of healthcare-associated infection rates is needed to allow individuals and the community to make informed choices regarding selecting a healthcare facility.
The best practices for preventing healthcare-associated infections include hand hygiene, patient risk...

Healthcare Associated Infections I: Iatrogenic, Exogenic and Endogenic

Healthcare Associated Infections I: Iatrogenic, Exogenic and Endogenic

Healthcare-associated infections (HAIs) occur in a healthcare facility while a person receives care for another ailment. This category also includes work-related infections among healthcare staff.
HAIs significantly increase the cost of health care. Extended stays in healthcare institutions, increased disability, increased costs of medications, including specialized antibiotics, and prolonged recovery times add to the patient's expenses and the healthcare institution and funding bodies. Common...

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Updated: Jun 13, 2026

Rapid Molecular Detection and Differentiation of Influenza Viruses A and B

Rapid Molecular Detection and Differentiation of Influenza Viruses A and B

Published on: January 30, 2017

Influenza-associated hospitalisation.

C M Wong¹, L Yang, E Chan

¹Department of Community Medicine, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, China.

Hong Kong Medical Journal = Xianggang Yi Xue Za Zhi

|April 16, 2010

Summary

Influenza causes significant disease burden beyond respiratory issues, impacting cerebrovascular, heart, and metabolic conditions. Understanding these links is crucial for comprehensive public health strategies.

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Area of Science:

Public Health
Epidemiology
Infectious Diseases

Background:

Influenza is primarily known for causing acute respiratory illness.
The full spectrum of influenza's impact on non-respiratory diseases is not widely recognized.

Purpose of the Study:

To highlight the broader disease burden of influenza.
To emphasize influenza's association with cerebrovascular disease, ischaemic heart disease, and diabetes mellitus.

Main Methods:

Literature review and analysis of epidemiological data.
Examination of existing studies on influenza and its comorbidities.

Main Results:

Influenza is linked to increased risks of cerebrovascular events.
A significant association exists between influenza and ischaemic heart disease.
Influenza burden extends to exacerbating or contributing to diabetes mellitus.

Conclusions:

Influenza's impact extends beyond acute respiratory symptoms.
Public health initiatives should consider influenza's role in cardiovascular and metabolic diseases.
Further research is warranted to elucidate the mechanisms linking influenza to these conditions.