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Acute respiratory infections — Clinical Guidelines

Overview

Acute respiratory infections (ARIs) encompass a broad range of illnesses affecting the respiratory tract, including upper respiratory infections (e.g., otitis media, sinusitis) and lower respiratory infections (e.g., pneumonia, bronchiolitis). Household air pollution and environmental factors significantly contribute to the burden of ARIs, particularly in vulnerable populations such as children under five 1 21.

Diagnosis

Clinical Presentation: Symptoms include cough, fever, sore throat, rhinorrhea, and difficulty breathing 3.

Physical Examination: Focus on respiratory signs such as wheezing, crackles, and decreased breath sounds 3.

Diagnostic Tests:

- Radiography: Chest X-rays for suspected pneumonia 20. - Nasopharyngeal Swabs: For viral detection (e.g., influenza, RSV) 17. - Laboratory Tests: Blood tests for leukocytosis, C-reactive protein levels 19.

Management

Supportive Care: Hydration, rest, fever management 3.

Antibiotics: Reserved for confirmed bacterial infections (e.g., pneumonia, severe cases) 27 28.

Vaccinations: Influenza and pneumococcal vaccines recommended to prevent severe infections 6 29.

Vitamin D: Consider supplementation in deficient children to potentially reduce infection risk 5 13.

Environmental Interventions: Reduce exposure to household air pollution and ETS 1 21.

Special Populations

Pediatrics: Higher susceptibility to ARIs; emphasize vaccinations and supportive care 3 13.

Elderly: Increased risk of complications; focus on preventive measures and early intervention 2 19.

Comorbidities: Patients with chronic respiratory conditions (e.g., asthma) require tailored management plans 7 15.

Key Recommendations

Implement Vaccination Programs: Administer influenza and pneumococcal vaccines to reduce severe respiratory infections in high-risk populations (Evidence: Strong 6 29).

Promote Environmental Health: Minimize exposure to household air pollution and environmental tobacco smoke to lower ARI incidence in children (Evidence: Moderate 1 21).

Judicious Antibiotic Use: Prescribe antibiotics only for confirmed bacterial infections to combat antibiotic resistance (Evidence: Moderate 27 28).

Consider Vitamin D Supplementation: Evaluate and supplement vitamin D in deficient children to potentially reduce respiratory infection risk (Evidence: Moderate 5 13).

Enhance Supportive Care: Provide adequate hydration, fever management, and respiratory support for pediatric and elderly patients (Evidence: Expert opinion).

References

1 Bajpayee PM, Mohanty PC, Yadav MK. Breathing in danger: unveiling cooking fuel transitions in India and alarming effect of household air pollution on under-five children's health. Journal of biosocial science 2025. link 2 Lee JH, Lee R, Jang H, Lee W, Lee JW, Kim HS et al.. Association between long-term PM. Environmental research 2025. link 3 Ishiwada N, Shinjoh M, Kusama Y, Arakawa H, Ohishi T, Saitoh A et al.. Guidelines for the Management of Respiratory Infectious Diseases in Children in Japan 2022. The Pediatric infectious disease journal 2023. link 4 Trecca EMC, Gaffuri M, Molinari G, Russo FY, Turri-Zanoni M, Albera A et al.. Impact of the COVID-19 pandemic on paediatric otolaryngology: a nationwide study. Acta otorhinolaryngologica Italica : organo ufficiale della Societa italiana di otorinolaringologia e chirurgia cervico-facciale 2023. link 5 Anitua E, Tierno R, Alkhraisat MH. Current opinion on the role of vitamin D supplementation in respiratory infections and asthma/COPD exacerbations: A need to establish publication guidelines for overcoming the unpublished data. Clinical nutrition (Edinburgh, Scotland) 2022. link 6 Khanna P, Khanna S. Respiratory vaccination. The Indian journal of tuberculosis 2022. link 7 Govers C, Calder PC, Savelkoul HFJ, Albers R, van Neerven RJJ. Ingestion, Immunity, and Infection: Nutrition and Viral Respiratory Tract Infections. Frontiers in immunology 2022. link 8 Topham DJ. Serendipity: Reflections on Being Mentored by Dr. Peter Doherty. Viral immunology 2020. link 9 Mori H, Suzuki H. Update on quinolone-containing rescue therapies for . World journal of gastroenterology 2020. link 10 Salazar MA, Law R, Winkler V. Health Consequences of an Armed Conflict in Zamboanga, Philippines Using a Syndromic Surveillance Database. International journal of environmental research and public health 2018. link 11 Louis DZ, Callahan CA, Robeson M, Liu M, McRae J, Gonnella JS et al.. Predicting risk of hospitalisation: a retrospective population-based analysis in a paediatric population in Emilia-Romagna, Italy. BMJ open 2018. link 12 Wang KN, Bell JS, Chen EYH, Gilmartin-Thomas JFM, Ilomäki J. Medications and Prescribing Patterns as Factors Associated with Hospitalizations from Long-Term Care Facilities: A Systematic Review. Drugs & aging 2018. link 13 Yakoob MY, Salam RA, Khan FR, Bhutta ZA. Vitamin D supplementation for preventing infections in children under five years of age. The Cochrane database of systematic reviews 2016. link 14 Casas L, Espinosa A, Borràs-Santos A, Jacobs J, Krop E, Heederik D et al.. Domestic use of bleach and infections in children: a multicentre cross-sectional study. Occupational and environmental medicine 2015. link 15 Kabra SK, Lodha R, Mehta P. 50 years of pediatric pulmonology, progress and future. Indian pediatrics 2013. link 16 Murphy M, Bradley CP, Byrne S. Antibiotic prescribing in primary care, adherence to guidelines and unnecessary prescribing--an Irish perspective. BMC family practice 2012. link 17 Norja P, Hedman L, Kantola K, Kemppainen K, Suvilehto J, Pitkäranta A et al.. Occurrence of human bocaviruses and parvovirus 4 in solid tissues. Journal of medical virology 2012. link 18 Halder AK, Gurley ES, Naheed A, Saha SK, Brooks WA, El Arifeen S et al.. Causes of early childhood deaths in urban Dhaka, Bangladesh. PloS one 2009. link 19 Knapp JF, Simon SD, Sharma V. Quality of care for common pediatric respiratory illnesses in United States emergency departments: analysis of 2005 National Hospital Ambulatory Medical Care Survey Data. Pediatrics 2008. link 20 Reed MH. Imaging utilization commentary: a radiology perspective. Pediatric radiology 2008. link 21 Cobanoglu N, Kiper N, Dilber E, Gurcan N, Gocmen A, Ozcelik U et al.. Environmental tobacco smoke exposure and respiratory morbidity in children. Inhalation toxicology 2007. link 22 Peppas G, Theocharis G, Karveli EA, Falagas ME. An analysis of patient house calls in the area of Attica, Greece. BMC health services research 2006. link 23 Lorenc TM, Kernan MT. Lower respiratory infections and potential complications in athletes. Current sports medicine reports 2006. link 24 Karevold G, Kvestad E, Nafstad P, Kvaerner KJ. Respiratory infections in schoolchildren: co-morbidity and risk factors. Archives of disease in childhood 2006. link 25 Roth Y, Sokolov M, Adler M, Ezry T, Harell M. Otorhinolaryngological problems occurring within the intensive care unit. Intensive care medicine 2003. link 26 Schindler C, Krappweis J, Morgenstern I, Kirch W. Prescriptions of systemic antibiotics for children in Germany aged between 0 and 6 years. Pharmacoepidemiology and drug safety 2003. link 27 Pichichero ME. Short course antibiotic therapy for respiratory infections: a review of the evidence. The Pediatric infectious disease journal 2000. link 28 Jacobs RF. Judicious use of antibiotics for common pediatric respiratory infections. The Pediatric infectious disease journal 2000. link 29 Schluter WW, Ralston DL, Delaney RJ, Sauaia A, Dunn TR. Increasing influenza and pneumococcal vaccination and tuberculosis screening among residents of Colorado long-term care facilities. Evaluation & the health professions 1999. link 30 Schweich PJ, Smith KM, Dowd MD, Walkley EI. Pediatric emergency medicine practice patterns: a comparison of pediatric and general emergency physicians. Pediatric emergency care 1998. link 31 Huchon G. Role of bacterial vaccines in prevention of respiratory infections with special reference to pneumococcal vaccines. Postgraduate medical journal 1983. link 32 Tay JS, Yip WC, Yap HK. Seasonal variations in admissions to a tropical paediatric unit. Tropical and geographical medicine 1983. link 33 Bjerregaard P. Housing standards, social group, and respiratory infections in children of Upernavik, Greenland. Scandinavian journal of social medicine 1983. link

Acute respiratory infections