Influenza due to influenza virus type A

Influenza due to influenza virus type A is an acute, contagious viral infection that primarily affects the respiratory system, including the upper and lower respiratory tracts

Influenza due to influenza virus type A is an acute, contagious viral infection that primarily affects the respiratory system, including the upper and lower respiratory tracts Pathophysiologically, the virus infects and replicates within respiratory epithelial cells, triggering localized mucosal inflammation and a robust systemic inflammatory cytokine response

It is caused by an enveloped, negative-sense, single-stranded RNA orthomyxovirus categorized into subtypes based on the antigenic properties of its surface glycoproteins, hemagglutinin and neuraminidase

It is caused by an enveloped, negative-sense, single-stranded RNA orthomyxovirus categorized into subtypes based on the antigenic properties of its surface glycoproteins, hemagglutinin and neuraminidase Clinically, it manifests with the abrupt onset of systemic symptoms—such as high fevers, chills, myalgias, severe fatigue, and headaches—often accompanied by cough, sore throat, and nasal congestion, with potential progression to severe primary viral pneumonia or secondary bacterial infections in...

Pathophysiologically, the virus infects and replicates within respiratory epithelial cells, triggering localized mucosal inflammation and a robust systemic inflammatory cytokine response Clinically, it manifests with the abrupt onset of systemic symptoms—such as high fevers, chills, myalgias, severe fatigue, and headaches—often accompanied by cough, sore throat, and nasal congestion, with potential progression to severe primary viral pneumonia or secondary bacterial infections in vulnerable popu...