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An In vitro Model to Study Immune Responses of Human Peripheral Blood Mononuclear Cells to Human Respiratory Syncytial Virus Infection
Published on: December 10, 2013
The child with recurrent respiratory infections: normal or not?
1Department of Paediatrics, University of Florence, Anna Meyer Children's Hospital, Florence, Italy. maurizio.demartino@unifi.it
Insights
Recurrent respiratory infections (RRI) in children are common and usually not due to immune system problems. Environmental factors like day-care and parental smoking significantly increase RRI risk.
Area of Science:
- Pediatrics
- Immunology
- Environmental Health
Background:
- Recurrent respiratory infections (RRI) are a frequent pediatric complaint, affecting at least 6% of young Italian children.
- Children with RRI typically do not have severe immune system deficits.
- RRI often result from increased exposure to pathogens during early childhood when immune functions are immature.
Purpose of the Study:
- To highlight that RRI in children are primarily linked to environmental exposures rather than underlying pathology.
- To guide pediatricians in differentiating frequent RRI due to environmental factors from those caused by other conditions.
- To emphasize the importance of addressing environmental risk factors in managing RRI.
Main Methods:
- Review of existing literature on pediatric respiratory infections and risk factors.
- Analysis of the relationship between environmental exposures and RRI incidence.
- Clinical differentiation strategies for pediatricians managing RRI.
Main Results:
- RRI are frequently associated with immature immune systems and increased exposure to infectious agents.
- Social and environmental factors like day-care, family size, pollution, smoking, and dampness are significant risk factors.
- Pediatricians face challenges in distinguishing RRI from other underlying conditions.
Conclusions:
- RRI in children are largely a consequence of environmental exposures and immature immune responses.
- Identifying and mitigating environmental risk factors is crucial for managing RRI.
- Pediatricians should prioritize environmental interventions when RRI is diagnosed.
Abstract:
Respiratory infections (RI) are one of the major complaints in children and adolescents, and represent a demanding challenge for the pediatrician. It has been estimated that at least 6% of Italian children younger than 6 yr of age present recurrent respiratory infections (RRI). Children with RRI are not affected by severe alterations of the immune system. RRI represent essentially the consequence of an increased exposure to infectious agents during the first years of life, when immune functions are still largely immature. Several social and environmental factors, such as day-care attendance, family size, air pollution, parental smoking, and home dampness, represent important risk factors for airway diseases and may contribute in various degrees to determine the incidence of RRI. The main problem for the pediatrician is to discriminate normal children with high RI frequency related to an augmented exposure to environmental risk factors from children affected by other underlying pathological conditions (immunological or not), predisposing to infectious diseases. When RRI diagnosis has been formulated, removal of environmental risk factors (i.e. precocious day-care attendance, smoking in the household) must first be suggested.
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