Related Experiment Video
Updated: Aug 19, 2026

Effect of Hyaluronic Acid 35 kDa on an In Vitro Model of Preterm Small Intestinal Injury and Healing Using Enteroid-Derived Monolayers
Published on: July 28, 2022
Causal factors of acute gastroenteritis in infants and young children
Sukrija Zvizdić1, Elvedina Kapić, Sadeta Hamzić
1Department of Microbiology, Faculty of Medicine, University of Sarajevo, Cekalusa 90, 71000 Sarajevo, Bosnia and Herzegovina.
Insights
Infants and young children frequently contract respiratory, gastrointestinal, and skin diseases due to immature immune systems and exposure in group settings. These young children also shed infectious agents longer than adults, posing risks to their families and communities.
Area of Science:
- Pediatrics
- Infectious Diseases
- Immunology
Background:
- Infants and young children commonly experience respiratory, gastrointestinal, and skin diseases.
- Infectious agents are primary causes of these conditions, impacting children, parents, and close contacts.
- Factors contributing to higher infection rates include immature immune systems and exposure in collective settings like nurseries.
Purpose of the Study:
- To explore the factors contributing to the high incidence of common diseases in infants and young children.
- To understand the prolonged shedding of microorganisms by young children compared to adults.
- To highlight the significance of nutrition and immunity in pediatric infectious diseases.
Main Methods:
- Review of existing literature on pediatric infectious diseases.
- Analysis of factors influencing infection susceptibility and transmission in young children.
- Comparison of microorganism shedding patterns between pediatric and adult populations.
Main Results:
- Immature immune systems and exposure in group settings increase infection risk in young children.
- Young children exhibit longer resistance and excretion of microorganisms compared to adults.
- Adults with established immunity may experience shorter disease duration and reduced pathogen shedding.
Conclusions:
- Understanding pediatric disease dynamics is crucial for public health and family well-being.
- Immunity plays a key role in modulating infection duration and pathogen shedding.
- Further research into pediatric nutrition and immunity can inform preventative strategies.
Abstract:
Respiratory, gastrointestinal and skin diseases represent the most common diseases in infants and young children. Causal factors of these diseases are important infectious agents and causes of pathological conditions in children, but they are also very important for their parents, as well as for people in their close environment. Greater incidence of infections in infants and young children can be explained in different ways. A cause can be insufficient maturity of their immune system, but also their exposure to infections within collective accommodations (cribs, nurseries, pre-school institutions), where they are, at the same time, exposed to a number of unknown agents. Today, a great emphasis is devoted to the ways and kinds of children's nutrition. The problem of relation between infected young organism and infectious agent itself, is also reflected in a long resistance and excretion of microorganisms in their exterior environment. It is well-known that microorganisms resist and excrete much longer in younger organisms, compared to adults, where their resistance and excretion is much shorter or very rare. Actually, adults have already formed protective immunity against particular infectious agents. It doesn't prevent infections in adults, colonization of pathogens, nor eventual development of disease. Established immunity can shorten the time necessary for excretion of microorganisms in their exterior environment and, if disease gets developed, it is of shorter duration and slower progress.
Related Concept Videos
Bacterial Gastroenteritis
Drugs Affecting GI Tract Motility: Antimicrobials as Antidiarrheal Agents
Gastritis-II: Pathophysiology
In acute gastritis, the gastric mucosa becomes swollen and red and undergoes superficial erosion. Superficial ulceration may lead to bleeding.
In chronic gastritis, persistent or repeated insults lead to chronic inflammatory changes and, eventually, thinning or atrophy of the gastric tissue.
Gastritis can stem from various causes, each...
Development of Human Microbiota
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 create...
Causality in Epidemiology
