Related Experiment Video
Updated: Jul 5, 2025

Author Spotlight: Advancements in Multiplex Detection of Respiratory Viruses
Published on: November 10, 2023
Pathogenesis of infections caused by SARS-CoV-2
Abstract:
SARS-CoV-2 primarily causes mucosal infections of the respiratory or intestinal tract. This virus, unlike other viruses responsible for similar mucosal infections, is characterized by an extraordinary ability to modify the immune response at several levels and thus cause a range of clinical complications. These manipulations create a false picture of pyogenic bacterial infection. The course of the disease is mainly determined by the natural mucosal immunity which can stop the virus from multiplying in the early stages of infection before it can exert its influence. COVID-19 has two main clinical forms: mucosal infection (respiratory or intestinal) and pneumonia. Pneumonia is associated with activation of the vascular endothelium and a procoagulant state. Viremia does not belong to the standard course of the disease. Affecting organs other than the lungs - whether during an active infection or later (long covid) - is usually caused by immunopathological reactions or hormonal regulation disorders.
More Related Videos
Related Concept Videos
Infection
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
Pneumonia II: Pathophysiology
Stages of Infection
Single Nucleotide Polymorphisms-SNPs
Pulmonary Tuberculosis II
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Factors Affecting the Risk of Infection
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...

